CVE-2026-86143
MEDIUM6.9CVSS v3
—CVSS v2
0.12%
EPSS (exploit probability)
CWE-192CWE
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.
CVSS v3 vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
Affected routers (0)
No routers currently mapped to this CVE in our database.