Incorrect Synchronization Affecting expat-debugsource package, versions <0:2.7.3-1.el10_2.3


Severity

Recommended
medium

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.1% (1st percentile)

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  • Snyk IDSNYK-ROCKY10-EXPATDEBUGSOURCE-19664314
  • published10 Sept 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 Rocky-Linux:10 expat-debugsource to version 0:2.7.3-1.el10_2.3 or higher.
This issue was patched in RLSA-2026:64810.

NVD Description

Note: Versions mentioned in the description apply only to the upstream expat-debugsource package and not the expat-debugsource package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:10 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