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7.8 High

CVE-2025-24928 libxml2 before 2.12.10 and 2.13.x before 2.13.6 has a stack-based buffer overflow in xmlSnprintfElements in valid.c

Description

libxml2 before 2.12.10 and 2.13.x before 2.13.6 has a stack-based buffer overflow in xmlSnprintfElements in valid.c. To exploit this, DTD validation must occur for an untrusted document or untrusted DTD. NOTE: this is similar to CVE-2017-9047.

Affected products and versions

Product Affected versions Fixed in
libxml2 2.13 2.13.0 → < 2.13.6 2.13.6
libxml2 2.12 earliest → < 2.12.10 2.12.10

Other CVEs of libxml2

The 15 CVEs of libxml2 →
CVE-2026-86144 In xinclude in libxml2 before 2.15.4, xmlXIncludeProcess and xmlXIncludeProcessTree do not propagate parseFlags 5.6 Medium CVE-2026-86143 In xmlIO in libxml2 before 2.15.4, an inconsistency in xmlOutputWriteCallback and xmlBufUse causes negative lengths to… 6.9 Medium CVE-2026-86142 In libxml2 before 2.15.4, there is a heap-based buffer overflow in xmlXPtrEvalXPtrPart because of xmlXPtrEval xpointer… 6.9 Medium CVE-2026-86141 xmlregexp in libxml2 before 2.15.4 has a NULL pointer dereference in xmlRegNewParserCtxt after a strdup failure, i.e.,… 2.9 Low
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