CVEvulnerability

CVE-2026-86143

7.3 HIGH Published 2026-09-05 Modified 2026-09-15 Official page ↗
Status
Analyzed
Published
2026-09-05
Last modified
2026-09-15
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.9 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
CVSS 3.1 ([email protected])
7.3 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Weaknesses
CWE-192

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.

Affected configurations

• xmlsoft libxml2 (< 2.15.4)

Related

Weakness · CWE (1)

  • CWE-192 Integer Coercion Error weakness

References