USN-7787-1: Libxslt vulnerabilities

Publication date

30 September 2025

Overview

Several security issues were fixed in Libxslt.


Packages

  • libxslt - XSLT processing library

Details

Ivan Fratric discovered that Libxslt did not correctly handle certain
memory operations. An attacker could possibly use this issue to execute
arbitrary code or cause a denial of service.

Ivan Fratric discovered that Libxslt did not correctly handle certain
memory operations. An attacker could possibly use this issue to execute
arbitrary code or cause a denial of service.

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
18.04 bionic libxslt1.1 –  1.1.29-5ubuntu0.3+esm2  
xsltproc –  1.1.29-5ubuntu0.3+esm2  
16.04 xenial libxslt1.1 –  1.1.28-2.1ubuntu0.3+esm3  
xsltproc –  1.1.28-2.1ubuntu0.3+esm3  
14.04 trusty libxslt1.1 –  1.1.28-2ubuntu0.2+esm4  
xsltproc –  1.1.28-2ubuntu0.2+esm4  

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.


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