GHSA-wm22-jw4m-rfcfMediumCVSS 4.8
libexpat through 2.10.0 contains an out-of-bounds read vulnerability in unknown_toUtf8() and...
🔗 CVE IDs covered (1)
📋 Description
libexpat through 2.10.0 contains an out-of-bounds read vulnerability in unknown_toUtf8() and unknown_toUtf16() in xmltok.c when handling application-registered unknown encodings. Attackers can supply a document ending in a truncated multibyte sequence so the convert callback reads past the parse buffer, leaking adjacent memory or crashing applications.
🔗 References (6)
- https://nvd.nist.gov/vuln/detail/CVE-2026-124317
- https://github.com/libexpat/libexpat/pull/1492
- https://github.com/libexpat/libexpat
- https://github.com/libexpat/libexpat/blob/a70841d9ffa64ddde29ab824ed6305035ebe4c47/expat/lib/xmltok.c#L1274-L1322
- https://www.vulncheck.com/advisories/libexpat-through-2.10.0-out-of-bounds-read-via-unknown-toutf8-and-unknown-toutf16
- https://github.com/advisories/GHSA-wm22-jw4m-rfcf