CVE-2026-86138 PUBLISHED

Assigner: mitre
Reserved: 05.09.2026 Published: 05.09.2026 Updated: 05.09.2026

In libxml2 before 2.15.4, xmlDictAddQString in dict.c has an integer overflow and resultant heap-based buffer overflow.

Metrics

CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
CVSS Score: 6.9

Product Status

Vendor xmlsoft
Product libxml2
Versions Default: unaffected
  • affected from 0 to 2.15.4 (excl.)

References

Problem Types

  • CWE-190 Integer Overflow or Wraparound CWE