MEDIUMVulnerability
CVE-2026-86143
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.
Properties
- severity
- MEDIUM
- score
- 6.9
- cve_id
- CVE-2026-86143
- signal_observed_at
- 2026-09-16T17:34:22+00:00
- vector
- CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
- published_at
- 2026-09-05T05:17:13.270
- last_modified
- 2026-09-15T19:31:15.857
Related Entities (3)
AFFECTS_PRODUCT (1)
→[Product]
HAS_WEAKNESS (1)
→[Weakness]Integer Coercion Error
DESCRIBED_BY (1)
→[Source]NVD
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