Ubuntu alert USN-8587-1 (libhtml-parser-perl)

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[USN-8587-1] HTML-Parser vulnerability
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Wed, 22 Jul 2026 14:36:31 +0000
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==========================================================================
Ubuntu Security Notice USN-8587-1
July 22, 2026

libhtml-parser-perl vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 26.04 LTS
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

HTML-Parser could be made to expose sensitive information.

Software Description:
- libhtml-parser-perl: collection of modules that parse HTML text documents

Details:

It was discovered that HTML-Parser incorrectly handled entity references
when the input string was identical to an entity value in the lookup table.
An attacker could possibly use this issue to obtain sensitive information.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 26.04 LTS
  libhtml-parser-perl             3.83-1ubuntu0.1

Ubuntu 24.04 LTS
  libhtml-parser-perl             3.81-1ubuntu0.1

Ubuntu 22.04 LTS
  libhtml-parser-perl             3.76-1ubuntu0.1

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-8587-1
  CVE-2026-8829

Package Information:
  https://launchpad.net/ubuntu/+source/libhtml-parser-perl/...
  https://launchpad.net/ubuntu/+source/libhtml-parser-perl/...
  https://launchpad.net/ubuntu/+source/libhtml-parser-perl/...


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