CVE-2026-25210CWE-190

In libexpat before 2.7.4, the doContent function does not properly determine the buffer size bufSize because there is no integer overflow check for tag buffer…

Medium · published January 30, 2026

CVSS v3.1
6.9
EPSS
0%
Percentile
11.2
In the wild
Unconfirmed
What it is

In libexpat before 2.7.4, the doContent function does not properly determine the buffer size bufSize because there is no integer overflow check for tag buffer reallocation.

The record
Technical detail
CVSS v3.1
6.9 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
CVSS v4.0
Not supplied
EPSS
0.00214 · 11.2th percentile
Weakness
CWE-190 · Integer Overflow or Wraparound
Published
2026-01-30T06:40Z
EPSS history
Timeline
  • 30 JAN 06:40Z
    In libexpat before 2.7.4, the doContent function does not properly determine the buffer size bufSize because there is no integer overflow check for tag buffer…
    cvelistv5