CVE-2026-86143 - libxml2 Integer Overflow in Output Callback

CVE-2026-86143 - libxml2 Integer Overflow in Output Callback

https://cvefeed.io/rssfeed/latest.atom / Sat, 09/05/2026 - 07:30
CVE ID :CVE-2026-86143
Published : Sept. 5, 2026, 4:31 a.m. | 33 minutes ago
Description :In xmlIO in libxml2 before 2.15.4, an inconsistency in xmlOutputWriteCallback and xmlBufUse causes negative lengths to reach write callbacks, aka a lack of a check for integer overflow before calling writecallback. This has security relevance for many types of uses of that length value within a callback.
Severity: 6.9 | MEDIUM
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