USN-8022-2: Expat vulnerabilities
Publication date
16 February 2026
Overview
Several security issues were fixed in Expat.
Releases
Packages
- expat - XML parsing C library
Details
USN-8022-1 fixed vulnerabilities in Expat. This update provides the
corresponding updates for Ubuntu 24.04 LTS.
Original advisory details:
It was discovered that Expat incorrectly handled the initialization of parsers
for external entities. An attacker could possibly use this issue to cause a
denial of service. (CVE-2026-24515)
It was discovered that Expat incorrectly handled integer calculations when
allocating memory for XML tags. An attacker could possibly use this issue to
cause a denial of service or execute arbitrary code. (CVE-2026-25210)
USN-8022-1 fixed vulnerabilities in Expat. This update provides the
corresponding updates for Ubuntu 24.04 LTS.
Original advisory details:
It was discovered that Expat incorrectly handled the initialization of parsers
for external entities. An attacker could possibly use this issue to cause a
denial of service. (CVE-2026-24515)
It was discovered that Expat incorrectly handled integer calculations when
allocating memory for XML tags. An attacker could possibly use this issue to
cause a denial of service or execute arbitrary code. (CVE-2026-25210)
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 24.04 LTS noble | expat – 2.6.1-2ubuntu0.4 | ||
| libexpat1 – 2.6.1-2ubuntu0.4 | |||
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