CVE-2026-86137

In libxml2 before 2.15.4, xmlFAParsePosCharGroup has an out-of-bounds read, aka an out-of-bounds read in the NXT macro in xmlregexp...

OSV-2026-565 Heap-buffer-overflow in xmlFAParsePosCharGroup

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=501547873 Crash type: Heap-buffer-overflow READ 1 Crash state: xmlFAParsePosCharGroup xmlFAParseCharGroup xmlFAParseCharGroup...

libxml2: Heap-buffer-overflow in xmlFAParserPosCharGroup

Heap-based buffer overflow in the xmlFAParsePosCharGroup function in libxml2 before 2.9.4, as used in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1, allows remote attackers to execute arbitrary code or cause a denial of service memory corruption via a...