CVE-2026-74860
libxml2: A flaw was found in libxml2 with Python bindings enabled
CVE-2026-74860 is fixed in 11 products on 1 platform, first by RHSA-2026:89759, released August 28, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
8.5
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0066
51st percentile
A flaw was found in libxml2 with Python bindings enabled. A remote attacker could exploit this vulnerability by providing a specially crafted XML document containing a Document Type Definition (DTD) with enumerated attribute values. This triggers a double-free error in the SAX attributeDecl callback handler, where a string is freed twice. This flaw can lead to a denial of service (DoS) due to a reproducible crash in Python applications using the libxml2 SAX bindings.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libxml2 · Debian 14 | 2.15.3+dfsg-1 | DEBIAN-CVE-2026-74860 | Sep 11, 2026 |
| libxml2 · RHEL 10 | 2.12.5-9.el10_0.9 | RHSA-2026:89759 | Aug 28, 2026 |
| libxml2 · RHEL 8 | 0:2.9.7-21.el8_10.9 | RHSA-2026:71641 | Sep 24, 2026 |
| libxml2 · RHEL 9 | 0:2.9.13-14.el9_8.5 | RHSA-2026:71585 | Sep 25, 2026 |
| libxml2 · Ubuntu 18.04.6 LTS (bionic) | 2.9.4+dfsg1-6.1ubuntu1.9+esm8 | libxml2 2.9.4+dfsg1-6.1ubuntu1.9+esm8 | Sep 22, 2026 |
| libxml2 · Ubuntu 20.04 LTS (focal) | 2.9.10+dfsg-5ubuntu0.20.04.10+esm5 | libxml2 2.9.10+dfsg-5ubuntu0.20.04.10+esm5 | Sep 22, 2026 |
| libxml2 · Ubuntu 22.04.1 LTS (jammy) | 2.9.13+dfsg-1ubuntu0.13 | libxml2 2.9.13+dfsg-1ubuntu0.13 | Sep 22, 2026 |
| libxml2 · Ubuntu 24.04.5 LTS (noble) | 2.9.14+dfsg-1.3ubuntu3.9 | libxml2 2.9.14+dfsg-1.3ubuntu3.9 | Sep 22, 2026 |
| libxml2 · almalinux 10 | 2.12.5-10.el10_2.4 | ALSA-2026:71586 | Sep 24, 2026 |
| libxml2 · almalinux 8 | 2.9.7-21.el8_10.9 | ALSA-2026:71641 | Sep 24, 2026 |
| libxml2 · almalinux 9 | 2.9.13-14.el9_8.5 | ALSA-2026:71585 | Sep 24, 2026 |
| libxml2 · amzn 2023 | 2.10.4-1.amzn2023.0.21 | ALAS2023-2026-3122 | Sep 28, 2026 |
| libxml2 · ol 10 | 0:2.12.5-10.el10_2.4 | ELSA-2026-71586 | Sep 25, 2026 |
| libxml2 · ol 8 | 0:2.9.7-21.el8_10.9 | ELSA-2026-71641 | Sep 25, 2026 |
| libxml2 · ol 9 | 0:2.9.13-14.el9_8.5 | ELSA-2026-71585 | Sep 24, 2026 |
| libxml2 · rocky 10 | 0:2.12.5-10.el10_2.4 | RLSA-2026:71586 | Sep 25, 2026 |
| libxml2 · rocky 8 | 0:2.9.7-21.el8_10.9 | RLSA-2026:71641 | Sep 26, 2026 |
| libxml2 · rocky 9 | 0:2.9.13-14.el9_8.5 | RLSA-2026:71585 | Sep 25, 2026 |
| libxml2-16 · Ubuntu 26.04.1 LTS (resolute) | 2.15.2+dfsg-0.1ubuntu0.2 | libxml2-16 2.15.2+dfsg-0.1ubuntu0.2 | Sep 8, 2026 |
| libxml2-debuginfo · amzn 2023 | 2.10.4-1.amzn2023.0.21 | ALAS2023-2026-3122 | Sep 28, 2026 |
| libxml2-debugsource · amzn 2023 | 2.10.4-1.amzn2023.0.21 | ALAS2023-2026-3122 | Sep 28, 2026 |
| libxml2-devel · RHEL 8 | 0:2.9.7-21.el8_10.9 | RHSA-2026:71641 | Sep 24, 2026 |
| libxml2-devel · RHEL 9 | 0:2.9.13-14.el9_8.5 | RHSA-2026:71585 | Sep 25, 2026 |
| libxml2-devel · almalinux 10 | 2.12.5-10.el10_2.4 | ALSA-2026:71586 | Sep 24, 2026 |
| libxml2-devel · almalinux 8 | 2.9.7-21.el8_10.9 | ALSA-2026:71641 | Sep 24, 2026 |
| libxml2-devel · almalinux 9 | 2.9.13-14.el9_8.5 | ALSA-2026:71585 | Sep 24, 2026 |
| libxml2-devel · amzn 2023 | 2.10.4-1.amzn2023.0.21 | ALAS2023-2026-3122 | Sep 28, 2026 |
| libxml2-devel · ol 10 | 0:2.12.5-10.el10_2.4 | ELSA-2026-71586 | Sep 25, 2026 |
| libxml2-devel · ol 8 | 0:2.9.7-21.el8_10.9 | ELSA-2026-71641 | Sep 25, 2026 |
| libxml2-devel · ol 9 | 0:2.9.13-14.el9_8.5 | ELSA-2026-71585 | Sep 24, 2026 |
| libxml2-source · Ubuntu 26.04.1 LTS (resolute) | 2.15.2+dfsg-0.1ubuntu0.2 | libxml2-source 2.15.2+dfsg-0.1ubuntu0.2 | Sep 8, 2026 |
| libxml2-static · almalinux 10 | 2.12.5-10.el10_2.4 | ALSA-2026:71586 | Sep 24, 2026 |
| libxml2-static · amzn 2023 | 2.10.4-1.amzn2023.0.21 | ALAS2023-2026-3122 | Sep 28, 2026 |
| libxml2-static · ol 10 | 0:2.12.5-10.el10_2.4 | ELSA-2026-71586 | Sep 25, 2026 |
| libxml2-utils · Ubuntu 18.04.6 LTS (bionic) | 2.9.4+dfsg1-6.1ubuntu1.9+esm8 | libxml2-utils 2.9.4+dfsg1-6.1ubuntu1.9+esm8 | Sep 22, 2026 |
| libxml2-utils · Ubuntu 20.04 LTS (focal) | 2.9.10+dfsg-5ubuntu0.20.04.10+esm5 | libxml2-utils 2.9.10+dfsg-5ubuntu0.20.04.10+esm5 | Sep 22, 2026 |
| libxml2-utils · Ubuntu 22.04.1 LTS (jammy) | 2.9.13+dfsg-1ubuntu0.13 | libxml2-utils 2.9.13+dfsg-1ubuntu0.13 | Sep 22, 2026 |
| libxml2-utils · Ubuntu 24.04.5 LTS (noble) | 2.9.14+dfsg-1.3ubuntu3.9 | libxml2-utils 2.9.14+dfsg-1.3ubuntu3.9 | Sep 22, 2026 |
| libxml2-utils · Ubuntu 26.04.1 LTS (resolute) | 2.15.2+dfsg-0.1ubuntu0.2 | libxml2-utils 2.15.2+dfsg-0.1ubuntu0.2 | Sep 8, 2026 |
| python-libxml2 · Ubuntu 18.04.6 LTS (bionic) | 2.9.4+dfsg1-6.1ubuntu1.9+esm8 | python-libxml2 2.9.4+dfsg1-6.1ubuntu1.9+esm8 | Sep 22, 2026 |
| python-libxml2 · Ubuntu 20.04 LTS (focal) | 2.9.10+dfsg-5ubuntu0.20.04.10+esm5 | python-libxml2 2.9.10+dfsg-5ubuntu0.20.04.10+esm5 | Sep 22, 2026 |
| python3-libxml2 · RHEL 8 | 0:2.9.7-21.el8_10.9 | RHSA-2026:71641 | Sep 24, 2026 |
| python3-libxml2 · RHEL 9 | 0:2.9.13-14.el9_8.5 | RHSA-2026:71585 | Sep 25, 2026 |
| python3-libxml2 · Ubuntu 18.04.6 LTS (bionic) | 2.9.4+dfsg1-6.1ubuntu1.9+esm8 | python3-libxml2 2.9.4+dfsg1-6.1ubuntu1.9+esm8 | Sep 22, 2026 |
| python3-libxml2 · Ubuntu 20.04 LTS (focal) | 2.9.10+dfsg-5ubuntu0.20.04.10+esm5 | python3-libxml2 2.9.10+dfsg-5ubuntu0.20.04.10+esm5 | Sep 22, 2026 |
| python3-libxml2 · Ubuntu 22.04.1 LTS (jammy) | 2.9.13+dfsg-1ubuntu0.13 | python3-libxml2 2.9.13+dfsg-1ubuntu0.13 | Sep 22, 2026 |
| python3-libxml2 · Ubuntu 24.04.5 LTS (noble) | 2.9.14+dfsg-1.3ubuntu3.9 | python3-libxml2 2.9.14+dfsg-1.3ubuntu3.9 | Sep 22, 2026 |
| python3-libxml2 · Ubuntu 26.04.1 LTS (resolute) | 2.15.2+dfsg-0.1ubuntu0.2 | python3-libxml2 2.15.2+dfsg-0.1ubuntu0.2 | Sep 8, 2026 |
| python3-libxml2 · almalinux 10 | 2.12.5-10.el10_2.4 | ALSA-2026:71586 | Sep 24, 2026 |
| python3-libxml2 · almalinux 8 | 2.9.7-21.el8_10.9 | ALSA-2026:71641 | Sep 24, 2026 |
| python3-libxml2 · almalinux 9 | 2.9.13-14.el9_8.5 | ALSA-2026:71585 | Sep 24, 2026 |
| python3-libxml2 · amzn 2023 | 2.10.4-1.amzn2023.0.21 | ALAS2023-2026-3122 | Sep 28, 2026 |
| python3-libxml2 · ol 10 | 0:2.12.5-10.el10_2.4 | ELSA-2026-71586 | Sep 25, 2026 |
| python3-libxml2 · ol 8 | 0:2.9.7-21.el8_10.9 | ELSA-2026-71641 | Sep 25, 2026 |
| python3-libxml2 · ol 9 | 0:2.9.13-14.el9_8.5 | ELSA-2026-71585 | Sep 24, 2026 |
| python3-libxml2-debuginfo · amzn 2023 | 2.10.4-1.amzn2023.0.21 | ALAS2023-2026-3122 | Sep 28, 2026 |
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