CVE-2023-52426
expat: libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD isundefined at compile time.
CVE-2023-52426 is fixed in 18 products on 1 platform, first by expat 2.6.0-1, released February 4, 2024. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
5.5
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0039
33rd percentile
libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD isundefined at compile time.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| expat · Debian 13.5 (trixie) | 2.6.0-1 | DEBIAN-CVE-2023-52426 | Feb 4, 2024 |
| expat · Debian 14 | 2.6.0-1 | DEBIAN-CVE-2023-52426 | Feb 4, 2024 |
| expat · Ubuntu 24.04.5 LTS (noble) | 2.6.0-1 | expat 2.6.0-1 | Feb 4, 2024 |
| expat · Ubuntu 24.10 (oracular) | 2.6.0-1 | expat 2.6.0-1 | Jan 16, 2026 |
| expat · Ubuntu 25.04 (plucky) | 2.6.0-1 | expat 2.6.0-1 | Jan 16, 2026 |
| expat · amzn 2023 | 2.5.0-1.amzn2023.0.3 | ALAS2023-2024-524 | Feb 15, 2024 |
| expat-debuginfo · amzn 2023 | 2.5.0-1.amzn2023.0.3 | ALAS2023-2024-524 | Feb 15, 2024 |
| expat-debugsource · amzn 2023 | 2.5.0-1.amzn2023.0.3 | ALAS2023-2024-524 | Feb 15, 2024 |
| expat-devel · amzn 2023 | 2.5.0-1.amzn2023.0.3 | ALAS2023-2024-524 | Feb 15, 2024 |
| expat-static · amzn 2023 | 2.5.0-1.amzn2023.0.3 | ALAS2023-2024-524 | Feb 15, 2024 |
| libexpat1 · Ubuntu 24.04.5 LTS (noble) | 2.6.0-1 | libexpat1 2.6.0-1 | Feb 4, 2024 |
| libexpat1 · Ubuntu 24.10 (oracular) | 2.6.0-1 | libexpat1 2.6.0-1 | Jan 16, 2026 |
| libexpat1 · Ubuntu 25.04 (plucky) | 2.6.0-1 | libexpat1 2.6.0-1 | Jan 16, 2026 |
| xmlrpc-c · amzn 2023 | 1.51.08-2.amzn2023.0.2 | ALAS2023-2025-1229 | Oct 27, 2025 |
| xmlrpc-c-apps · amzn 2023 | 1.51.08-2.amzn2023.0.2 | ALAS2023-2025-1229 | Oct 27, 2025 |
| xmlrpc-c-apps-debuginfo · amzn 2023 | 1.51.08-2.amzn2023.0.2 | ALAS2023-2025-1229 | Oct 27, 2025 |
| xmlrpc-c-c++ · amzn 2023 | 1.51.08-2.amzn2023.0.2 | ALAS2023-2025-1229 | Oct 27, 2025 |
| xmlrpc-c-c++-debuginfo · amzn 2023 | 1.51.08-2.amzn2023.0.2 | ALAS2023-2025-1229 | Oct 27, 2025 |
| xmlrpc-c-client · amzn 2023 | 1.51.08-2.amzn2023.0.2 | ALAS2023-2025-1229 | Oct 27, 2025 |
| xmlrpc-c-client++ · amzn 2023 | 1.51.08-2.amzn2023.0.2 | ALAS2023-2025-1229 | Oct 27, 2025 |
| xmlrpc-c-client++-debuginfo · amzn 2023 | 1.51.08-2.amzn2023.0.2 | ALAS2023-2025-1229 | Oct 27, 2025 |
| xmlrpc-c-client-debuginfo · amzn 2023 | 1.51.08-2.amzn2023.0.2 | ALAS2023-2025-1229 | Oct 27, 2025 |
| xmlrpc-c-debuginfo · amzn 2023 | 1.51.08-2.amzn2023.0.2 | ALAS2023-2025-1229 | Oct 27, 2025 |
| xmlrpc-c-debugsource · amzn 2023 | 1.51.08-2.amzn2023.0.2 | ALAS2023-2025-1229 | Oct 27, 2025 |
| xmlrpc-c-devel · amzn 2023 | 1.51.08-2.amzn2023.0.2 | ALAS2023-2025-1229 | Oct 27, 2025 |
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