Integer Overflow or Wraparound Affecting expat package, versions <2.8.2-1~deb13u1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.2% (11th percentile)

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  • Snyk IDSNYK-ECHOLATEST-EXPAT-18426782
  • published30 Jul 2026
  • disclosed30 Jan 2026

Introduced: 30 Jan 2026

CVE-2026-25210  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Echo:latest expat to version 2.8.2-1~deb13u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream expat package and not the expat package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1