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Ubuntu 26.04 LTS HTML-Parser Critical Info Exposure USN-8587-1

ubuntu
Calendar Grey July 22, 2026
Scroller Ubuntu
Update libhtml-parser-perl now to mitigate critical issues exposing sensitive info in Ubuntu systems.
HTML-Parser could be made to expose sensitive information.

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.

Topics%20covered

Topics Covered

security advisory critical Ubuntu sensitive information libhtml-parser-perl html parser

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

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8587-1

Topics%20covered

Topics Covered

security advisory critical Ubuntu sensitive information libhtml-parser-perl html parser

Package Information

https://launchpad.net/ubuntu/+source/libhtml-parser-perl/3.83-1ubuntu0.1
https://launchpad.net/ubuntu/+source/libhtml-parser-perl/3.81-1ubuntu0.1
https://launchpad.net/ubuntu/+source/libhtml-parser-perl/3.76-1ubuntu0.1

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