CVE-2026-1299
email BytesGenerator header injection due to unquoted newlines
CVE-2026-1299 is fixed in 95 products on 2 platforms, first by idle-python3.14 3.14.3-1, released January 23, 2026. 9 other affected products have no fix yet. It is not reported as exploited. Patch Radar priority: High.
HighFixed on 2 platforms
CVSS
7.1
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0057
47th percentile
The email module, specifically the "BytesGenerator" class, didn’t properly quote newlines for email headers when serializing an email message allowing for header injection when an email is serialized. This is only applicable if using "LiteralHeader" writing headers that don't respect email folding rules, the new behavior will reject the incorrectly folded headers in "BytesGenerator".
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Python 3.13 | 3.13.12 | Python 3.13 3.13.12 | Feb 3, 2026 |
| Python 3.14 | 3.14.3 | Python 3.14 3.14.3 | Feb 3, 2026 |
| Linux | |||
| idle-python3.10 · Ubuntu 22.04.1 LTS (jammy) | 3.10.12-1~22.04.16 | idle-python3.10 3.10.12-1~22.04.16 | Jul 7, 2026 |
| idle-python3.12 · Ubuntu 24.04.5 LTS (noble) | 3.12.3-1ubuntu0.15 | idle-python3.12 3.12.3-1ubuntu0.15 | Jul 7, 2026 |
| idle-python3.14 · Ubuntu 26.04.1 LTS (resolute) | 3.14.3-1 | idle-python3.14 3.14.3-1 | Jan 23, 2026 |
| libpython3.10 · Ubuntu 22.04.1 LTS (jammy) | 3.10.12-1~22.04.16 | libpython3.10 3.10.12-1~22.04.16 | Jul 7, 2026 |
| libpython3.10-minimal · Ubuntu 22.04.1 LTS (jammy) | 3.10.12-1~22.04.16 | libpython3.10-minimal 3.10.12-1~22.04.16 | Jul 7, 2026 |
| libpython3.10-stdlib · Ubuntu 22.04.1 LTS (jammy) | 3.10.12-1~22.04.16 | libpython3.10-stdlib 3.10.12-1~22.04.16 | Jul 7, 2026 |
| libpython3.10-testsuite · Ubuntu 22.04.1 LTS (jammy) | 3.10.12-1~22.04.16 | libpython3.10-testsuite 3.10.12-1~22.04.16 | Jul 7, 2026 |
| libpython3.12-minimal · Ubuntu 24.04.5 LTS (noble) | 3.12.3-1ubuntu0.15 | libpython3.12-minimal 3.12.3-1ubuntu0.15 | Jul 7, 2026 |
| libpython3.12-stdlib · Ubuntu 24.04.5 LTS (noble) | 3.12.3-1ubuntu0.15 | libpython3.12-stdlib 3.12.3-1ubuntu0.15 | Jul 7, 2026 |
| libpython3.12-testsuite · Ubuntu 24.04.5 LTS (noble) | 3.12.3-1ubuntu0.15 | libpython3.12-testsuite 3.12.3-1ubuntu0.15 | Jul 7, 2026 |
| libpython3.12t64 · Ubuntu 24.04.5 LTS (noble) | 3.12.3-1ubuntu0.15 | libpython3.12t64 3.12.3-1ubuntu0.15 | Jul 7, 2026 |
| libpython3.14 · Ubuntu 26.04.1 LTS (resolute) | 3.14.3-1 | libpython3.14 3.14.3-1 | Jan 23, 2026 |
| libpython3.14-minimal · Ubuntu 26.04.1 LTS (resolute) | 3.14.3-1 | libpython3.14-minimal 3.14.3-1 | Jan 23, 2026 |
| libpython3.14-stdlib · Ubuntu 26.04.1 LTS (resolute) | 3.14.3-1 | libpython3.14-stdlib 3.14.3-1 | Jan 23, 2026 |
| libpython3.14-testsuite · Ubuntu 26.04.1 LTS (resolute) | 3.14.3-1 | libpython3.14-testsuite 3.14.3-1 | Jan 23, 2026 |
| platform-python · RHEL 8 | 0:3.6.8-73.el8_10 | RHSA-2026:2128 | Feb 5, 2026 |
| platform-python · almalinux 8 | 3.6.8-73.el8_10.alma.1 | ALSA-2026:2128 | Feb 5, 2026 |
| platform-python · ol 8 | 0:3.6.8-73.0.1.el8_10 | ELSA-2026-2128 | Feb 5, 2026 |
| platform-python-debug · RHEL 8 | 0:3.6.8-73.el8_10 | RHSA-2026:2128 | Feb 5, 2026 |
| platform-python-debug · almalinux 8 | 3.6.8-73.el8_10.alma.1 | ALSA-2026:2128 | Feb 5, 2026 |
| platform-python-debug · ol 8 | 0:3.6.8-73.0.1.el8_10 | ELSA-2026-2128 | Feb 5, 2026 |
| platform-python-devel · RHEL 8 | 0:3.6.8-73.el8_10 | RHSA-2026:2128 | Feb 5, 2026 |
| platform-python-devel · almalinux 8 | 3.6.8-73.el8_10.alma.1 | ALSA-2026:2128 | Feb 5, 2026 |
| platform-python-devel · ol 8 | 0:3.6.8-73.0.1.el8_10 | ELSA-2026-2128 | Feb 5, 2026 |
| pypy3 · Debian 14 | 7.3.21+dfsg-1 | DEBIAN-CVE-2026-1299 | Jan 23, 2026 |
| python · opensuse-leap 15.6 | 2.7.18-150000.108.1 | SUSE-SU-2026:0873-1 | Mar 11, 2026 |
| python · sles 15.7 | 2.7.18-150000.108.1 | SUSE-SU-2026:0873-1 | Mar 11, 2026 |
| python-base · opensuse-leap 15.6 | 2.7.18-150000.108.1 | SUSE-SU-2026:0873-1 | Mar 11, 2026 |
| python-base · sles 15.7 | 2.7.18-150000.108.1 | SUSE-SU-2026:0873-1 | Mar 11, 2026 |
| python-doc · opensuse-leap 15.6 | 2.7.18-150000.108.1 | SUSE-SU-2026:0873-1 | Mar 11, 2026 |
| python-unversioned-command · RHEL 9 | 0:3.9.25-3.el9_7.1 | RHSA-2026:4168 | Mar 12, 2026 |
| python-unversioned-command · almalinux 10 | 3.12.12-3.el10_1.1 | ALSA-2026:4713 | Mar 17, 2026 |
| python-unversioned-command · almalinux 9 | 3.9.25-3.el9_7.1 | ALSA-2026:4168 | Mar 10, 2026 |
| python-unversioned-command · amzn 2023 | 3.9.25-1.amzn2023.0.4 | ALAS2023-2026-1583 | Apr 13, 2026 |
| python-unversioned-command · ol 10 | 0:3.12.12-3.0.1.el10_1.1 | ELSA-2026-4713 | Mar 17, 2026 |
| python-unversioned-command · ol 9 | 0:3.9.25-3.0.1.el9_7.1 | ELSA-2026-4168 | Mar 10, 2026 |
| python3 · RHEL 9 | 0:3.9.25-3.el9_7.1 | RHSA-2026:4168 | Mar 12, 2026 |
| python3 · almalinux 9 | 3.9.25-3.el9_7.1 | ALSA-2026:4168 | Mar 10, 2026 |
| python3 · amzn 2023 | 3.9.25-1.amzn2023.0.4 | ALAS2023-2026-1583 | Apr 13, 2026 |
| python3 · ol 10 | 0:3.12.12-3.0.1.el10_1.1 | ELSA-2026-4713 | Mar 17, 2026 |
| python3 · ol 9 | 0:3.9.25-3.0.1.el9_7.1 | ELSA-2026-4168 | Mar 10, 2026 |
| python3 · opensuse-leap 15.6 | 3.6.15-150300.10.109.1 | SUSE-SU-2026:1090-1 | Mar 26, 2026 |
| python3 · rocky 8 | 0:3.6.8-73.el8_10.rocky.0 | RLSA-2026:2128 | May 21, 2026 |
| python3 · sles 15.6 | 3.6.15-150300.10.109.1 | SUSE-SU-2026:1090-1 | Mar 26, 2026 |
| python3 · sles 15.7 | 3.6.15-150300.10.109.1 | SUSE-SU-2026:1090-1 | Mar 26, 2026 |
| python3-core · opensuse-leap 15.6 | 3.6.15-150300.10.109.1 | SUSE-SU-2026:1090-1 | Mar 26, 2026 |
| python3-core · sles 15.6 | 3.6.15-150300.10.109.1 | SUSE-SU-2026:1090-1 | Mar 26, 2026 |
| python3-core · sles 15.7 | 3.6.15-150300.10.109.1 | SUSE-SU-2026:1090-1 | Mar 26, 2026 |
| python3-debug · RHEL 9 | 0:3.9.25-3.el9_7.1 | RHSA-2026:4168 | Mar 12, 2026 |
| python3-debug · almalinux 9 | 3.9.25-3.el9_7.1 | ALSA-2026:4168 | Mar 10, 2026 |
| python3-debug · amzn 2023 | 3.9.25-1.amzn2023.0.4 | ALAS2023-2026-1583 | Apr 13, 2026 |
| python3-debug · ol 10 | 0:3.12.12-3.0.1.el10_1.1 | ELSA-2026-4713 | Mar 17, 2026 |
| python3-debug · ol 9 | 0:3.9.25-3.0.1.el9_7.1 | ELSA-2026-4168 | Mar 10, 2026 |
| python3-devel · RHEL 9 | 0:3.9.25-3.el9_7.1 | RHSA-2026:4168 | Mar 12, 2026 |
| python3-devel · almalinux 9 | 3.9.25-3.el9_7.1 | ALSA-2026:4168 | Mar 10, 2026 |
| python3-devel · amzn 2023 | 3.9.25-1.amzn2023.0.4 | ALAS2023-2026-1583 | Apr 13, 2026 |
| python3-devel · ol 10 | 0:3.12.12-3.0.1.el10_1.1 | ELSA-2026-4713 | Mar 17, 2026 |
| python3-devel · ol 9 | 0:3.9.25-3.0.1.el9_7.1 | ELSA-2026-4168 | Mar 10, 2026 |
| python3-documentation · opensuse-leap 15.6 | 3.6.15-150300.10.109.1 | SUSE-SU-2026:1090-1 | Mar 26, 2026 |
| python3-idle · RHEL 8 | 0:3.6.8-73.el8_10 | RHSA-2026:2128 | Feb 5, 2026 |
| python3-idle · RHEL 9 | 0:3.9.25-3.el9_7.1 | RHSA-2026:4168 | Mar 12, 2026 |
| python3-idle · almalinux 8 | 3.6.8-73.el8_10.alma.1 | ALSA-2026:2128 | Feb 5, 2026 |
| python3-idle · almalinux 9 | 3.9.25-3.el9_7.1 | ALSA-2026:4168 | Mar 10, 2026 |
| python3-idle · amzn 2023 | 3.9.25-1.amzn2023.0.4 | ALAS2023-2026-1583 | Apr 13, 2026 |
| python3-idle · ol 10 | 0:3.12.12-3.0.1.el10_1.1 | ELSA-2026-4713 | Mar 17, 2026 |
| python3-idle · ol 8 | 0:3.6.8-73.0.1.el8_10 | ELSA-2026-2128 | Feb 5, 2026 |
| python3-idle · ol 9 | 0:3.9.25-3.0.1.el9_7.1 | ELSA-2026-4168 | Mar 10, 2026 |
| python3-libs · RHEL 8 | 0:3.6.8-73.el8_10 | RHSA-2026:2128 | Feb 5, 2026 |
| python3-libs · RHEL 9 | 0:3.9.25-3.el9_7.1 | RHSA-2026:4168 | Mar 12, 2026 |
| python3-libs · almalinux 8 | 3.6.8-73.el8_10.alma.1 | ALSA-2026:2128 | Feb 5, 2026 |
| python3-libs · almalinux 9 | 3.9.25-3.el9_7.1 | ALSA-2026:4168 | Mar 10, 2026 |
| python3-libs · amzn 2023 | 3.9.25-1.amzn2023.0.4 | ALAS2023-2026-1583 | Apr 13, 2026 |
| python3-libs · ol 10 | 0:3.12.12-3.0.1.el10_1.1 | ELSA-2026-4713 | Mar 17, 2026 |
| python3-libs · ol 8 | 0:3.6.8-73.0.1.el8_10 | ELSA-2026-2128 | Feb 5, 2026 |
| python3-libs · ol 9 | 0:3.9.25-3.0.1.el9_7.1 | ELSA-2026-4168 | Mar 10, 2026 |
| python3-test · RHEL 8 | 0:3.6.8-73.el8_10 | RHSA-2026:2128 | Feb 5, 2026 |
| python3-test · RHEL 9 | 0:3.9.25-3.el9_7.1 | RHSA-2026:4168 | Mar 12, 2026 |
| python3-test · almalinux 8 | 3.6.8-73.el8_10.alma.1 | ALSA-2026:2128 | Feb 5, 2026 |
| python3-test · almalinux 9 | 3.9.25-3.el9_7.1 | ALSA-2026:4168 | Mar 10, 2026 |
| python3-test · amzn 2023 | 3.9.25-1.amzn2023.0.4 | ALAS2023-2026-1583 | Apr 13, 2026 |
| python3-test · ol 10 | 0:3.12.12-3.0.1.el10_1.1 | ELSA-2026-4713 | Mar 17, 2026 |
| python3-test · ol 8 | 0:3.6.8-73.0.1.el8_10 | ELSA-2026-2128 | Feb 5, 2026 |
| python3-test · ol 9 | 0:3.9.25-3.0.1.el9_7.1 | ELSA-2026-4168 | Mar 10, 2026 |
| python3-tkinter · RHEL 8 | 0:3.6.8-73.el8_10 | RHSA-2026:2128 | Feb 5, 2026 |
| python3-tkinter · RHEL 9 | 0:3.9.25-3.el9_7.1 | RHSA-2026:4168 | Mar 12, 2026 |
| python3-tkinter · almalinux 8 | 3.6.8-73.el8_10.alma.1 | ALSA-2026:2128 | Feb 5, 2026 |
| python3-tkinter · almalinux 9 | 3.9.25-3.el9_7.1 | ALSA-2026:4168 | Mar 10, 2026 |
| python3-tkinter · amzn 2023 | 3.9.25-1.amzn2023.0.4 | ALAS2023-2026-1583 | Apr 13, 2026 |
| python3-tkinter · ol 10 | 0:3.12.12-3.0.1.el10_1.1 | ELSA-2026-4713 | Mar 17, 2026 |
| python3-tkinter · ol 8 | 0:3.6.8-73.0.1.el8_10 | ELSA-2026-2128 | Feb 5, 2026 |
| python3-tkinter · ol 9 | 0:3.9.25-3.0.1.el9_7.1 | ELSA-2026-4168 | Mar 10, 2026 |
| python3.10 · Ubuntu 22.04.1 LTS (jammy) | 3.10.12-1~22.04.16 | python3.10 3.10.12-1~22.04.16 | Jul 7, 2026 |
| python3.10-examples · Ubuntu 22.04.1 LTS (jammy) | 3.10.12-1~22.04.16 | python3.10-examples 3.10.12-1~22.04.16 | Jul 7, 2026 |
| python3.10-full · Ubuntu 22.04.1 LTS (jammy) | 3.10.12-1~22.04.16 | python3.10-full 3.10.12-1~22.04.16 | Jul 7, 2026 |
| python3.10-minimal · Ubuntu 22.04.1 LTS (jammy) | 3.10.12-1~22.04.16 | python3.10-minimal 3.10.12-1~22.04.16 | Jul 7, 2026 |
| python3.10-nopie · Ubuntu 22.04.1 LTS (jammy) | 3.10.12-1~22.04.16 | python3.10-nopie 3.10.12-1~22.04.16 | Jul 7, 2026 |
| python3.10-venv · Ubuntu 22.04.1 LTS (jammy) | 3.10.12-1~22.04.16 | python3.10-venv 3.10.12-1~22.04.16 | Jul 7, 2026 |
| python3.11 · Debian 12.15 (bookworm) | 3.11.2-6+deb12u7 | DEBIAN-CVE-2026-1299 | Jan 23, 2026 |
| python3.11 · RHEL 8 | 0:3.11.13-5.el8_10 | RHSA-2026:4473 | Mar 12, 2026 |
| python3.11 · RHEL 9 | 0:3.11.13-5.1.el9_7 | RHSA-2026:4216 | Mar 12, 2026 |
| python3.11 · almalinux 8 | 3.11.13-5.el8_10 | ALSA-2026:4473 | Mar 12, 2026 |
| python3.11 · almalinux 9 | 3.11.13-5.1.el9_7 | ALSA-2026:4216 | Mar 10, 2026 |
| python3.11 · amzn 2023 | 3.11.14-1.amzn2023.0.4 | ALAS2023-2026-1447 | Mar 2, 2026 |
| python3.11 · ol 8 | 0:3.11.13-5.0.1.el8_10 | ELSA-2026-4473 | Mar 12, 2026 |
| python3.11 · ol 9 | 0:3.11.13-5.1.0.1.el9_7 | ELSA-2026-4216 | Mar 11, 2026 |
| python3.11 · rocky 8 | 0:3.11.13-5.el8_10 | RLSA-2026:4473 | Mar 13, 2026 |
| python3.11 · rocky 9 | 0:3.11.13-5.1.el9_7 | RLSA-2026:4216 | Mar 12, 2026 |
| python3.11-debug · RHEL 8 | 0:3.11.13-5.el8_10 | RHSA-2026:4473 | Mar 12, 2026 |
| python3.11-debug · RHEL 9 | 0:3.11.13-5.1.el9_7 | RHSA-2026:4216 | Mar 12, 2026 |
| python3.11-debug · almalinux 8 | 3.11.13-5.el8_10 | ALSA-2026:4473 | Mar 12, 2026 |
| python3.11-debug · almalinux 9 | 3.11.13-5.1.el9_7 | ALSA-2026:4216 | Mar 10, 2026 |
| python3.11-debug · amzn 2023 | 3.11.14-1.amzn2023.0.4 | ALAS2023-2026-1447 | Mar 2, 2026 |
| python3.11-debug · ol 8 | 0:3.11.13-5.0.1.el8_10 | ELSA-2026-4473 | Mar 12, 2026 |
| python3.11-debug · ol 9 | 0:3.11.13-5.1.0.1.el9_7 | ELSA-2026-4216 | Mar 11, 2026 |
| python3.11-debuginfo · amzn 2023 | 3.11.14-1.amzn2023.0.4 | ALAS2023-2026-1447 | Mar 2, 2026 |
| python3.11-debugsource · amzn 2023 | 3.11.14-1.amzn2023.0.4 | ALAS2023-2026-1447 | Mar 2, 2026 |
| python3.11-devel · RHEL 8 | 0:3.11.13-5.el8_10 | RHSA-2026:4473 | Mar 12, 2026 |
| python3.11-devel · RHEL 9 | 0:3.11.13-5.1.el9_7 | RHSA-2026:4216 | Mar 12, 2026 |
| python3.11-devel · almalinux 8 | 3.11.13-5.el8_10 | ALSA-2026:4473 | Mar 12, 2026 |
| python3.11-devel · almalinux 9 | 3.11.13-5.1.el9_7 | ALSA-2026:4216 | Mar 10, 2026 |
| python3.11-devel · amzn 2023 | 3.11.14-1.amzn2023.0.4 | ALAS2023-2026-1447 | Mar 2, 2026 |
| python3.11-devel · ol 8 | 0:3.11.13-5.0.1.el8_10 | ELSA-2026-4473 | Mar 12, 2026 |
| python3.11-devel · ol 9 | 0:3.11.13-5.1.0.1.el9_7 | ELSA-2026-4216 | Mar 11, 2026 |
| python3.11-idle · RHEL 8 | 0:3.11.13-5.el8_10 | RHSA-2026:4473 | Mar 12, 2026 |
| python3.11-idle · RHEL 9 | 0:3.11.13-5.1.el9_7 | RHSA-2026:4216 | Mar 12, 2026 |
| python3.11-idle · almalinux 8 | 3.11.13-5.el8_10 | ALSA-2026:4473 | Mar 12, 2026 |
| python3.11-idle · almalinux 9 | 3.11.13-5.1.el9_7 | ALSA-2026:4216 | Mar 10, 2026 |
| python3.11-idle · amzn 2023 | 3.11.14-1.amzn2023.0.4 | ALAS2023-2026-1447 | Mar 2, 2026 |
| python3.11-idle · ol 8 | 0:3.11.13-5.0.1.el8_10 | ELSA-2026-4473 | Mar 12, 2026 |
| python3.11-idle · ol 9 | 0:3.11.13-5.1.0.1.el9_7 | ELSA-2026-4216 | Mar 11, 2026 |
| python3.11-libs · RHEL 8 | 0:3.11.13-5.el8_10 | RHSA-2026:4473 | Mar 12, 2026 |
| python3.11-libs · RHEL 9 | 0:3.11.13-5.1.el9_7 | RHSA-2026:4216 | Mar 12, 2026 |
| python3.11-libs · almalinux 8 | 3.11.13-5.el8_10 | ALSA-2026:4473 | Mar 12, 2026 |
| python3.11-libs · almalinux 9 | 3.11.13-5.1.el9_7 | ALSA-2026:4216 | Mar 10, 2026 |
| python3.11-libs · amzn 2023 | 3.11.14-1.amzn2023.0.4 | ALAS2023-2026-1447 | Mar 2, 2026 |
| python3.11-libs · ol 8 | 0:3.11.13-5.0.1.el8_10 | ELSA-2026-4473 | Mar 12, 2026 |
| python3.11-libs · ol 9 | 0:3.11.13-5.1.0.1.el9_7 | ELSA-2026-4216 | Mar 11, 2026 |
| python3.11-rpm-macros · RHEL 8 | 0:3.11.13-5.el8_10 | RHSA-2026:4473 | Mar 12, 2026 |
| python3.11-rpm-macros · almalinux 8 | 3.11.13-5.el8_10 | ALSA-2026:4473 | Mar 12, 2026 |
| python3.11-rpm-macros · ol 8 | 0:3.11.13-5.0.1.el8_10 | ELSA-2026-4473 | Mar 12, 2026 |
| python3.11-test · RHEL 8 | 0:3.11.13-5.el8_10 | RHSA-2026:4473 | Mar 12, 2026 |
| python3.11-test · RHEL 9 | 0:3.11.13-5.1.el9_7 | RHSA-2026:4216 | Mar 12, 2026 |
| python3.11-test · almalinux 8 | 3.11.13-5.el8_10 | ALSA-2026:4473 | Mar 12, 2026 |
| python3.11-test · almalinux 9 | 3.11.13-5.1.el9_7 | ALSA-2026:4216 | Mar 10, 2026 |
| python3.11-test · amzn 2023 | 3.11.14-1.amzn2023.0.4 | ALAS2023-2026-1447 | Mar 2, 2026 |
| python3.11-test · ol 8 | 0:3.11.13-5.0.1.el8_10 | ELSA-2026-4473 | Mar 12, 2026 |
| python3.11-test · ol 9 | 0:3.11.13-5.1.0.1.el9_7 | ELSA-2026-4216 | Mar 11, 2026 |
| python3.11-tkinter · RHEL 8 | 0:3.11.13-5.el8_10 | RHSA-2026:4473 | Mar 12, 2026 |
| python3.11-tkinter · RHEL 9 | 0:3.11.13-5.1.el9_7 | RHSA-2026:4216 | Mar 12, 2026 |
| python3.11-tkinter · almalinux 8 | 3.11.13-5.el8_10 | ALSA-2026:4473 | Mar 12, 2026 |
| python3.11-tkinter · almalinux 9 | 3.11.13-5.1.el9_7 | ALSA-2026:4216 | Mar 10, 2026 |
| python3.11-tkinter · amzn 2023 | 3.11.14-1.amzn2023.0.4 | ALAS2023-2026-1447 | Mar 2, 2026 |
| python3.11-tkinter · ol 8 | 0:3.11.13-5.0.1.el8_10 | ELSA-2026-4473 | Mar 12, 2026 |
| python3.11-tkinter · ol 9 | 0:3.11.13-5.1.0.1.el9_7 | ELSA-2026-4216 | Mar 11, 2026 |
| python3.12 · RHEL 10 | 3.12.9-2.el10_0.7 | RHSA-2026:5315 | Jan 23, 2026 |
| python3.12 · RHEL 8 | 0:3.12.12-3.el8_10 | RHSA-2026:4463 | Mar 12, 2026 |
| python3.12 · RHEL 9 | 0:3.12.12-4.el9_7.1 | RHSA-2026:4165 | Mar 12, 2026 |
| python3.12 · Ubuntu 24.04.5 LTS (noble) | 3.12.3-1ubuntu0.15 | python3.12 3.12.3-1ubuntu0.15 | Jul 7, 2026 |
| python3.12 · almalinux 8 | 3.12.12-3.el8_10 | ALSA-2026:4463 | Mar 12, 2026 |
| python3.12 · almalinux 9 | 3.12.12-4.el9_7.1 | ALSA-2026:4165 | Mar 10, 2026 |
| python3.12 · amzn 2023 | 3.12.12-2.amzn2023.0.4 | ALAS2023-2026-1444 | Feb 16, 2026 |
| python3.12 · ol 8 | 0:3.12.12-3.el8_10 | ELSA-2026-4463 | Mar 12, 2026 |
| python3.12 · ol 9 | 0:3.12.12-4.0.1.el9_7.1 | ELSA-2026-4165 | Mar 10, 2026 |
| python3.12 · rocky 10 | 0:3.12.12-3.el10_1.1 | RLSA-2026:4713 | Mar 27, 2026 |
| python3.12 · rocky 8 | 0:3.12.12-3.el8_10 | RLSA-2026:4463 | Mar 12, 2026 |
| python3.12 · rocky 9 | 0:3.12.12-4.el9_7.1 | RLSA-2026:4165 | Mar 11, 2026 |
| python3.12-debug · RHEL 8 | 0:3.12.12-3.el8_10 | RHSA-2026:4463 | Mar 12, 2026 |
| python3.12-debug · RHEL 9 | 0:3.12.12-4.el9_7.1 | RHSA-2026:4165 | Mar 12, 2026 |
| python3.12-debug · almalinux 8 | 3.12.12-3.el8_10 | ALSA-2026:4463 | Mar 12, 2026 |
| python3.12-debug · almalinux 9 | 3.12.12-4.el9_7.1 | ALSA-2026:4165 | Mar 10, 2026 |
| python3.12-debug · amzn 2023 | 3.12.12-2.amzn2023.0.4 | ALAS2023-2026-1444 | Feb 16, 2026 |
| python3.12-debug · ol 8 | 0:3.12.12-3.el8_10 | ELSA-2026-4463 | Mar 12, 2026 |
| python3.12-debug · ol 9 | 0:3.12.12-4.0.1.el9_7.1 | ELSA-2026-4165 | Mar 10, 2026 |
| python3.12-debuginfo · amzn 2023 | 3.12.12-2.amzn2023.0.4 | ALAS2023-2026-1444 | Feb 16, 2026 |
| python3.12-debugsource · amzn 2023 | 3.12.12-2.amzn2023.0.4 | ALAS2023-2026-1444 | Feb 16, 2026 |
| python3.12-devel · RHEL 8 | 0:3.12.12-3.el8_10 | RHSA-2026:4463 | Mar 12, 2026 |
| python3.12-devel · RHEL 9 | 0:3.12.12-4.el9_7.1 | RHSA-2026:4165 | Mar 12, 2026 |
| python3.12-devel · almalinux 8 | 3.12.12-3.el8_10 | ALSA-2026:4463 | Mar 12, 2026 |
| python3.12-devel · almalinux 9 | 3.12.12-4.el9_7.1 | ALSA-2026:4165 | Mar 10, 2026 |
| python3.12-devel · amzn 2023 | 3.12.12-2.amzn2023.0.4 | ALAS2023-2026-1444 | Feb 16, 2026 |
| python3.12-devel · ol 8 | 0:3.12.12-3.el8_10 | ELSA-2026-4463 | Mar 12, 2026 |
| python3.12-devel · ol 9 | 0:3.12.12-4.0.1.el9_7.1 | ELSA-2026-4165 | Mar 10, 2026 |
| python3.12-examples · Ubuntu 24.04.5 LTS (noble) | 3.12.3-1ubuntu0.15 | python3.12-examples 3.12.3-1ubuntu0.15 | Jul 7, 2026 |
| python3.12-full · Ubuntu 24.04.5 LTS (noble) | 3.12.3-1ubuntu0.15 | python3.12-full 3.12.3-1ubuntu0.15 | Jul 7, 2026 |
| python3.12-idle · RHEL 8 | 0:3.12.12-3.el8_10 | RHSA-2026:4463 | Mar 12, 2026 |
| python3.12-idle · RHEL 9 | 0:3.12.12-4.el9_7.1 | RHSA-2026:4165 | Mar 12, 2026 |
| python3.12-idle · almalinux 8 | 3.12.12-3.el8_10 | ALSA-2026:4463 | Mar 12, 2026 |
| python3.12-idle · almalinux 9 | 3.12.12-4.el9_7.1 | ALSA-2026:4165 | Mar 10, 2026 |
| python3.12-idle · amzn 2023 | 3.12.12-2.amzn2023.0.4 | ALAS2023-2026-1444 | Feb 16, 2026 |
| python3.12-idle · ol 8 | 0:3.12.12-3.el8_10 | ELSA-2026-4463 | Mar 12, 2026 |
| python3.12-idle · ol 9 | 0:3.12.12-4.0.1.el9_7.1 | ELSA-2026-4165 | Mar 10, 2026 |
| python3.12-libs · RHEL 8 | 0:3.12.12-3.el8_10 | RHSA-2026:4463 | Mar 12, 2026 |
| python3.12-libs · RHEL 9 | 0:3.12.12-4.el9_7.1 | RHSA-2026:4165 | Mar 12, 2026 |
| python3.12-libs · almalinux 8 | 3.12.12-3.el8_10 | ALSA-2026:4463 | Mar 12, 2026 |
| python3.12-libs · almalinux 9 | 3.12.12-4.el9_7.1 | ALSA-2026:4165 | Mar 10, 2026 |
| python3.12-libs · amzn 2023 | 3.12.12-2.amzn2023.0.4 | ALAS2023-2026-1444 | Feb 16, 2026 |
| python3.12-libs · ol 8 | 0:3.12.12-3.el8_10 | ELSA-2026-4463 | Mar 12, 2026 |
| python3.12-libs · ol 9 | 0:3.12.12-4.0.1.el9_7.1 | ELSA-2026-4165 | Mar 10, 2026 |
| python3.12-minimal · Ubuntu 24.04.5 LTS (noble) | 3.12.3-1ubuntu0.15 | python3.12-minimal 3.12.3-1ubuntu0.15 | Jul 7, 2026 |
| python3.12-nopie · Ubuntu 24.04.5 LTS (noble) | 3.12.3-1ubuntu0.15 | python3.12-nopie 3.12.3-1ubuntu0.15 | Jul 7, 2026 |
| python3.12-rpm-macros · RHEL 8 | 0:3.12.12-3.el8_10 | RHSA-2026:4463 | Mar 12, 2026 |
| python3.12-rpm-macros · almalinux 8 | 3.12.12-3.el8_10 | ALSA-2026:4463 | Mar 12, 2026 |
| python3.12-rpm-macros · ol 8 | 0:3.12.12-3.el8_10 | ELSA-2026-4463 | Mar 12, 2026 |
| python3.12-test · RHEL 8 | 0:3.12.12-3.el8_10 | RHSA-2026:4463 | Mar 12, 2026 |
| python3.12-test · RHEL 9 | 0:3.12.12-4.el9_7.1 | RHSA-2026:4165 | Mar 12, 2026 |
| python3.12-test · almalinux 8 | 3.12.12-3.el8_10 | ALSA-2026:4463 | Mar 12, 2026 |
| python3.12-test · almalinux 9 | 3.12.12-4.el9_7.1 | ALSA-2026:4165 | Mar 10, 2026 |
| python3.12-test · amzn 2023 | 3.12.12-2.amzn2023.0.4 | ALAS2023-2026-1444 | Feb 16, 2026 |
| python3.12-test · ol 8 | 0:3.12.12-3.el8_10 | ELSA-2026-4463 | Mar 12, 2026 |
| python3.12-test · ol 9 | 0:3.12.12-4.0.1.el9_7.1 | ELSA-2026-4165 | Mar 10, 2026 |
| python3.12-tkinter · RHEL 8 | 0:3.12.12-3.el8_10 | RHSA-2026:4463 | Mar 12, 2026 |
| python3.12-tkinter · RHEL 9 | 0:3.12.12-4.el9_7.1 | RHSA-2026:4165 | Mar 12, 2026 |
| python3.12-tkinter · almalinux 8 | 3.12.12-3.el8_10 | ALSA-2026:4463 | Mar 12, 2026 |
| python3.12-tkinter · almalinux 9 | 3.12.12-4.el9_7.1 | ALSA-2026:4165 | Mar 10, 2026 |
| python3.12-tkinter · amzn 2023 | 3.12.12-2.amzn2023.0.4 | ALAS2023-2026-1444 | Feb 16, 2026 |
| python3.12-tkinter · ol 8 | 0:3.12.12-3.el8_10 | ELSA-2026-4463 | Mar 12, 2026 |
| python3.12-tkinter · ol 9 | 0:3.12.12-4.0.1.el9_7.1 | ELSA-2026-4165 | Mar 10, 2026 |
| python3.12-venv · Ubuntu 24.04.5 LTS (noble) | 3.12.3-1ubuntu0.15 | python3.12-venv 3.12.3-1ubuntu0.15 | Jul 7, 2026 |
| python3.13 · Debian 13.5 (trixie) | 3.13.5-2+deb13u1 | DEBIAN-CVE-2026-1299 | Jan 23, 2026 |
| python3.13 · amzn 2023 | 3.13.12-1.amzn2023.0.1 | ALAS2023-2026-1437 | Feb 16, 2026 |
| python3.13-debug · amzn 2023 | 3.13.12-1.amzn2023.0.1 | ALAS2023-2026-1437 | Feb 16, 2026 |
| python3.13-debuginfo · amzn 2023 | 3.13.12-1.amzn2023.0.1 | ALAS2023-2026-1437 | Feb 16, 2026 |
| python3.13-debugsource · amzn 2023 | 3.13.12-1.amzn2023.0.1 | ALAS2023-2026-1437 | Feb 16, 2026 |
| python3.13-devel · amzn 2023 | 3.13.12-1.amzn2023.0.1 | ALAS2023-2026-1437 | Feb 16, 2026 |
| python3.13-freethreading · amzn 2023 | 3.13.12-1.amzn2023.0.1 | ALAS2023-2026-1437 | Feb 16, 2026 |
| python3.13-freethreading-debug · amzn 2023 | 3.13.12-1.amzn2023.0.1 | ALAS2023-2026-1437 | Feb 16, 2026 |
| python3.13-idle · amzn 2023 | 3.13.12-1.amzn2023.0.1 | ALAS2023-2026-1437 | Feb 16, 2026 |
| python3.13-libs · amzn 2023 | 3.13.12-1.amzn2023.0.1 | ALAS2023-2026-1437 | Feb 16, 2026 |
| python3.13-test · amzn 2023 | 3.13.12-1.amzn2023.0.1 | ALAS2023-2026-1437 | Feb 16, 2026 |
| python3.13-tkinter · amzn 2023 | 3.13.12-1.amzn2023.0.1 | ALAS2023-2026-1437 | Feb 16, 2026 |
| python3.14 · Debian 14 | 3.14.3-1 | DEBIAN-CVE-2026-1299 | Jan 23, 2026 |
| python3.14 · Ubuntu 26.04.1 LTS (resolute) | 3.14.3-1 | python3.14 3.14.3-1 | Jan 23, 2026 |
| python3.14-examples · Ubuntu 26.04.1 LTS (resolute) | 3.14.3-1 | python3.14-examples 3.14.3-1 | Jan 23, 2026 |
| python3.14-full · Ubuntu 26.04.1 LTS (resolute) | 3.14.3-1 | python3.14-full 3.14.3-1 | Jan 23, 2026 |
| python3.14-gdbm · Ubuntu 26.04.1 LTS (resolute) | 3.14.3-1 | python3.14-gdbm 3.14.3-1 | Jan 23, 2026 |
| python3.14-minimal · Ubuntu 26.04.1 LTS (resolute) | 3.14.3-1 | python3.14-minimal 3.14.3-1 | Jan 23, 2026 |
| python3.14-nopie · Ubuntu 26.04.1 LTS (resolute) | 3.14.3-1 | python3.14-nopie 3.14.3-1 | Jan 23, 2026 |
| python3.14-tk · Ubuntu 26.04.1 LTS (resolute) | 3.14.3-1 | python3.14-tk 3.14.3-1 | Jan 23, 2026 |
| python3.14-venv · Ubuntu 26.04.1 LTS (resolute) | 3.14.3-1 | python3.14-venv 3.14.3-1 | Jan 23, 2026 |
| python3.9 · rocky 9 | 0:3.9.25-3.el9_7.1 | RLSA-2026:4168 | Mar 11, 2026 |
| python3.9-debuginfo · amzn 2023 | 3.9.25-1.amzn2023.0.4 | ALAS2023-2026-1583 | Apr 13, 2026 |
| python3.9-debugsource · amzn 2023 | 3.9.25-1.amzn2023.0.4 | ALAS2023-2026-1583 | Apr 13, 2026 |
| python311 · opensuse-leap 15.6 | 3.11.15-150600.3.53.1 | SUSE-SU-2026:1349-1 | Apr 15, 2026 |
| python311 · sles 15.6 | 3.11.15-150600.3.53.1 | SUSE-SU-2026:1349-1 | Apr 15, 2026 |
| python311 · sles 15.7 | 3.11.15-150600.3.53.1 | SUSE-SU-2026:1349-1 | Apr 15, 2026 |
| python311-core · opensuse-leap 15.6 | 3.11.15-150600.3.53.1 | SUSE-SU-2026:1349-1 | Apr 15, 2026 |
| python311-core · sles 15.6 | 3.11.15-150600.3.53.1 | SUSE-SU-2026:1349-1 | Apr 15, 2026 |
| python311-core · sles 15.7 | 3.11.15-150600.3.53.1 | SUSE-SU-2026:1349-1 | Apr 15, 2026 |
| python311-documentation · opensuse-leap 15.6 | 3.11.15-150600.3.53.1 | SUSE-SU-2026:1349-1 | Apr 15, 2026 |
| python313 · opensuse-leap 16.0 | 3.13.13-160000.1.1 | OPENSUSE-SU-2026:20517-1 | Apr 13, 2026 |
| python313 · sles 15.7 | 3.13.13-150700.4.45.1 | SUSE-SU-2026:1354-1 | Apr 15, 2026 |
| python313 · sles 16.0 | 3.13.13-160000.1.1 | SUSE-SU-2026:21178-1 | Apr 13, 2026 |
| python313-core · opensuse-leap 16.0 | 3.13.13-160000.1.1 | OPENSUSE-SU-2026:20517-1 | Apr 13, 2026 |
| python313-core · sles 15.7 | 3.13.13-150700.4.45.1 | SUSE-SU-2026:1354-1 | Apr 15, 2026 |
| python313-core · sles 16.0 | 3.13.13-160000.1.1 | SUSE-SU-2026:21178-1 | Apr 13, 2026 |
| python313-documentation · opensuse-leap 16.0 | 3.13.13-160000.1.1 | OPENSUSE-SU-2026:20517-1 | Apr 13, 2026 |
| python313-documentation · sles 16.0 | 3.13.13-160000.1.1 | SUSE-SU-2026:21178-1 | Apr 13, 2026 |
| python313-nogil · opensuse-leap 16.0 | 3.13.13-160000.1.1 | OPENSUSE-SU-2026:20517-1 | Apr 13, 2026 |
| python313-nogil-nogil-core · opensuse-leap 16.0 | 3.13.13-160000.1.1 | OPENSUSE-SU-2026:20517-1 | Apr 13, 2026 |
| No fix yet | |||
| Python 2 (Windows apps) | No fix yet | no-fix | n/a |
| Python 3.10 (Windows apps) | No fix yet | no-fix | n/a |
| Python 3.11 (Windows apps) | No fix yet | no-fix | n/a |
| Python 3.12 (Windows apps) | No fix yet | no-fix | n/a |
| Python 3.5 (Windows apps) | No fix yet | no-fix | n/a |
| Python 3.6 (Windows apps) | No fix yet | no-fix | n/a |
| Python 3.7 (Windows apps) | No fix yet | no-fix | n/a |
| Python 3.8 (Windows apps) | No fix yet | no-fix | n/a |
| Python 3.9 (Windows apps) | No fix yet | no-fix | n/a |
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