urllib3: HTTPS proxy TLS configuration may be ignored or overridden
CVE-2026-97687 is fixed in 5 products on 1 platform, first by python3-urllib3 2.6.3-1ubuntu1.2, released September 29, 2026. It is not reported as exploited. Patch Radar priority: High.
Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Security Fix(es): * urllib3: urllib3: Denial of Service via unbounded memory allocation in chunk parser (CVE-2026-97689) * urllib3: urllib3: Traffic interception via HTTPS proxy TLS configuration override (CVE-2026-97687) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| python-urllib3 · Debian 14 | 2.8.0-1 | DEBIAN-CVE-2026-97687 | Sep 30, 2026 |
| python-urllib3 · RHEL 10 | 1.26.19-4.el10_2.2 | RHSA-2026:85930 | Sep 29, 2026 |
| python-urllib3 · opensuse-leap 16.0 | 2.5.0-160000.8.1 | OPENSUSE-SU-2026:22071-1 | Nov 7, 2026 |
| python-urllib3 · rocky 10 | 0:1.26.19-4.el10_2.2 | RLSA-2026:85930 | Nov 7, 2026 |
| python-urllib3 · rocky 9 | 0:1.26.5-8.el9_8.2 | RLSA-2026:90494 | Nov 7, 2026 |
| python-urllib3 · sles 15.6 | 2.0.7-150400.7.36.1 | SUSE-SU-2026:4704-1 | Nov 7, 2026 |
| python-urllib3 · sles 15.7 | 2.0.7-150400.7.36.1 | SUSE-SU-2026:4704-1 | Nov 7, 2026 |
| python-urllib3 · sles 16.0 | 2.5.0-160000.8.1 | SUSE-SU-2026:24217-1 | Nov 7, 2026 |
| python-urllib3_1 · sles 15.6 | 1.26.18-150600.3.14.1 | SUSE-SU-2026:4948-1 | Nov 7, 2026 |
| python-urllib3_1 · sles 15.7 | 1.26.18-150600.3.14.1 | SUSE-SU-2026:4948-1 | Nov 7, 2026 |
| python3-urllib3 · RHEL 9 | 0:1.26.5-8.el9_8.2 | RHSA-2026:90494 | Oct 29, 2026 |
| python3-urllib3 · Ubuntu 26.04.1 LTS (resolute) | 2.6.3-1ubuntu1.2 | python3-urllib3 2.6.3-1ubuntu1.2 | Sep 29, 2026 |
| python3-urllib3 · almalinux 10 | 1.26.19-4.el10_2.2 | ALSA-2026:85930 | Nov 7, 2026 |
| python3-urllib3 · almalinux 9 | 1.26.5-8.el9_8.2 | ALSA-2026:90494 | Nov 7, 2026 |
| python3-urllib3 · ol 10 | 0:1.26.19-4.el10_2.2 | ELSA-2026-85930 | Nov 7, 2026 |
| python3-urllib3 · ol 9 | 0:1.26.5-8.el9_8.2 | ELSA-2026-90494 | Nov 7, 2026 |
| python3.12-urllib3 · RHEL 8 | 0:1.26.19-5.el8_10 | RHSA-2026:92474 | Oct 30, 2026 |
| python3.12-urllib3 · RHEL 9 | 0:1.26.19-3.el9_8.2 | RHSA-2026:85929 | Oct 21, 2026 |
| python3.12-urllib3 · almalinux 8 | 1.26.19-5.el8_10 | ALSA-2026:92474 | Nov 7, 2026 |
| python3.12-urllib3 · almalinux 9 | 1.26.19-3.el9_8.2 | ALSA-2026:85929 | Nov 7, 2026 |
| python3.12-urllib3 · ol 8 | 0:1.26.19-5.el8_10 | ELSA-2026-92474 | Nov 7, 2026 |
| python3.12-urllib3 · ol 9 | 0:1.26.19-3.el9_8.2 | ELSA-2026-85929 | Nov 7, 2026 |
| python3.12-urllib3 · rocky 8 | 0:1.26.19-5.el8_10 | RLSA-2026:92474 | Nov 7, 2026 |
| python3.12-urllib3 · rocky 9 | 0:1.26.19-3.el9_8.2 | RLSA-2026:85929 | Nov 7, 2026 |
| python3.14-urllib3 · RHEL 10 | 2.6.3-2.el10_2.6 | RHSA-2026:84578 | Oct 19, 2026 |
| python3.14-urllib3 · RHEL 9 | 0:2.6.3-2.el9_8.6 | RHSA-2026:84577 | Oct 19, 2026 |
| python3.14-urllib3 · almalinux 10 | 2.6.3-2.el10_2.6 | ALSA-2026:84578 | Nov 7, 2026 |
| python3.14-urllib3 · almalinux 9 | 2.6.3-2.el9_8.6 | ALSA-2026:84577 | Nov 7, 2026 |
| python3.14-urllib3 · ol 10 | 0:2.6.3-2.el10_2.6 | ELSA-2026-84578 | Nov 7, 2026 |
| python3.14-urllib3 · ol 9 | 0:2.6.3-2.el9_8.6 | ELSA-2026-84577 | Nov 7, 2026 |
| python3.14-urllib3 · rocky 10 | 0:2.6.3-2.el10_2.6 | RLSA-2026:84578 | Nov 7, 2026 |
| python3.14-urllib3 · rocky 9 | 0:2.6.3-2.el9_8.6 | RLSA-2026:84577 | Nov 7, 2026 |
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