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Expat XML Parser Security Update: Prevents Data Corruption and Crashes

Summary

This update fixes security issues in the Expat XML parser that could allow attackers to cause data corruption or crashes. These vulnerabilities were identified in the way the parser handled XML files, potentially allowing malicious code to be executed. To stay secure, update your Expat installation to the latest version.

What to do
  • Update expat to version 2.7.1-150400.3.34.1.
Affected software
VendorProductAffected versionsFix available
expat <= 2.7.1-150400.3.34.1 2.7.1-150400.3.34.1
expat <= 2.7.1-150400.3.34.1 2.7.1-150400.3.34.1
expat <= 2.7.1-150400.3.34.1 2.7.1-150400.3.34.1
expat <= 2.7.1-150400.3.34.1 2.7.1-150400.3.34.1
Original title
Security update for expat
Original description
This update for expat fixes the following issues:

- CVE-2026-24515: Fixed a null dereference in XML_ExternalEntityParserCreate. (bsc#1257144)
- CVE-2026-25210: Fixed an integer overflow in doContent. (bsc#1257496)
Published: 5 Mar 2026 · Updated: 6 Mar 2026 · First seen: 6 Mar 2026