Incorrect Synchronization Affecting expat package, versions <2.8.2-1~deb13u1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.1% (2nd percentile)

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  • Snyk IDSNYK-ECHOLATEST-EXPAT-18426798
  • published30 Jul 2026
  • disclosed19 Jun 2026

Introduced: 19 Jun 2026

CVE-2026-56132  (opens in a new tab)
CWE-821  (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 2.8.2, there is a heap-based buffer overflow in doProlog in xmlparse.c because scaffold backing array reallocation is mishandled when there is data-structure sharing across parsers.

CVSS Base Scores

version 3.1