CVE-2026-86137

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.

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 2.9 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

Frequently asked questions

What is CVE-2026-86137?: CVE-2026-86137 is a low-severity vulnerability, classified under Out-of-bounds Read. CVSS score: 2.9/10. Published 2026-09-05.
How severe is CVE-2026-86137?: Low severity. CVSS v3 base score is 2.9 out of 10.