Algorithmic Complexity Affecting expat package, versions *


Severity

Recommended
low

Based on default assessment until relevant scores are available.

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  • Snyk IDSNYK-DEBIANUNSTABLE-EXPAT-14149143
  • published29 Nov 2025
  • disclosed28 Nov 2025

Introduced: 28 Nov 2025

NewCVE-2025-66382  (opens in a new tab)
CWE-407  (opens in a new tab)

How to fix?

There is no fixed version for Debian:unstable expat.

NVD Description

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

In libexpat through 2.7.3, a crafted file with an approximate size of 2 MiB can lead to dozens of seconds of processing time.

CVSS Base Scores

version 3.1