CVE-2026-86138 In libxml2 before 2.15.4, xmlDictAddQString in dict.c has an integer overflow and resultant heap-based buffer overflow

Description

In libxml2 before 2.15.4, xmlDictAddQString in dict.c has an integer overflow and resultant heap-based buffer overflow.

Produits et versions touchés

Produit	Versions touchées	Corrigé en
libxml2 2.15	premières → < 2.15.4	2.15.4

Autres CVE de libxml2

Les 15 CVE de libxml2 →

CVE-2026-86144 In xinclude in libxml2 before 2.15.4, xmlXIncludeProcess and xmlXIncludeProcessTree do not propagate parseFlags 5.6 Moyenne CVE-2026-86143 In xmlIO in libxml2 before 2.15.4, an inconsistency in xmlOutputWriteCallback and xmlBufUse causes negative lengths to… 6.9 Moyenne CVE-2026-86142 In libxml2 before 2.15.4, there is a heap-based buffer overflow in xmlXPtrEvalXPtrPart because of xmlXPtrEval xpointer… 6.9 Moyenne 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 Faible