CVE-2026-24515
expat: In libexpat before 2.7.4, XML_ExternalEntityParserCreate does not copy unknown encoding handler user data.
CVE-2026-24515 is fixed in 4 products on 1 platform, first by DEBIAN-CVE-2026-24515, released January 23, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
2.5
low
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0019
8th percentile
In libexpat before 2.7.4, XML_ExternalEntityParserCreate does not copy unknown encoding handler user data.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| expat · Debian 12.15 (bookworm) | 2.5.0-1+deb12u4 | DEBIAN-CVE-2026-24515 | Jan 23, 2026 |
| expat · Debian 13.5 (trixie) | 2.8.2-1~deb13u1 | DEBIAN-CVE-2026-24515 | Jan 23, 2026 |
| expat · Debian 14 | 2.7.3-2 | DEBIAN-CVE-2026-24515 | Jan 23, 2026 |
| expat · Ubuntu 18.04.6 LTS (bionic) | 2.2.5-3ubuntu0.9+esm3 | expat 2.2.5-3ubuntu0.9+esm3 | Jan 29, 2026 |
| expat · Ubuntu 20.04 LTS (focal) | 2.2.9-1ubuntu0.8+esm1 | expat 2.2.9-1ubuntu0.8+esm1 | Jan 29, 2026 |
| expat · Ubuntu 22.04.1 LTS (jammy) | 2.4.7-1ubuntu0.7 | expat 2.4.7-1ubuntu0.7 | Jan 29, 2026 |
| expat · Ubuntu 24.04.5 LTS (noble) | 2.6.1-2ubuntu0.4 | expat 2.6.1-2ubuntu0.4 | Jan 29, 2026 |
| expat · Ubuntu 25.10 (questing) | 2.7.1-2ubuntu0.2 | expat 2.7.1-2ubuntu0.2 | Jan 29, 2026 |
| expat · opensuse-leap 15.6 | 2.7.1-150400.3.34.1 | SUSE-SU-2026:0826-1 | Mar 5, 2026 |
| expat · opensuse-leap 16.0 | 2.7.1-160000.4.1 | OPENSUSE-SU-2026:20306-1 | Mar 3, 2026 |
| expat · sles 15.6 | 2.8.5-150400.3.40.1 | SUSE-SU-2026:4623-1 | Nov 7, 2026 |
| expat · sles 15.7 | 2.8.5-150700.3.15.1 | SUSE-SU-2026:4619-1 | Nov 7, 2026 |
| expat · sles 16.0 | 2.7.1-160000.4.1 | SUSE-SU-2026:20627-1 | Mar 3, 2026 |
| libexpat1 · Ubuntu 18.04.6 LTS (bionic) | 2.2.5-3ubuntu0.9+esm3 | libexpat1 2.2.5-3ubuntu0.9+esm3 | Jan 29, 2026 |
| libexpat1 · Ubuntu 20.04 LTS (focal) | 2.2.9-1ubuntu0.8+esm1 | libexpat1 2.2.9-1ubuntu0.8+esm1 | Jan 29, 2026 |
| libexpat1 · Ubuntu 22.04.1 LTS (jammy) | 2.4.7-1ubuntu0.7 | libexpat1 2.4.7-1ubuntu0.7 | Jan 29, 2026 |
| libexpat1 · Ubuntu 24.04.5 LTS (noble) | 2.6.1-2ubuntu0.4 | libexpat1 2.6.1-2ubuntu0.4 | Jan 29, 2026 |
| libexpat1 · Ubuntu 25.10 (questing) | 2.7.1-2ubuntu0.2 | libexpat1 2.7.1-2ubuntu0.2 | Jan 29, 2026 |
| libxmltok1 · Ubuntu 18.04.6 LTS (bionic) | 1.2-4ubuntu0.18.04.1~esm6 | libxmltok1 1.2-4ubuntu0.18.04.1~esm6 | Jan 29, 2026 |
| libxmltok1 · Ubuntu 20.04 LTS (focal) | 1.2-4ubuntu0.20.04.1~esm6 | libxmltok1 1.2-4ubuntu0.20.04.1~esm6 | Jan 29, 2026 |
| libxmltok1 · Ubuntu 22.04.1 LTS (jammy) | 1.2-4ubuntu0.22.04.1~esm6 | libxmltok1 1.2-4ubuntu0.22.04.1~esm6 | Jan 29, 2026 |
| libxmltok1t64 · Ubuntu 24.04.5 LTS (noble) | 1.2-4.1ubuntu2.24.0.4.1+esm4 | libxmltok1t64 1.2-4.1ubuntu2.24.0.4.1+esm4 | Jan 29, 2026 |
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