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[USN-8627-1] Yelp vulnerability

Posted on 12 August 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8627-1
August 11, 2026

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

- Ubuntu 26.04 LTS
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Yelp could be made to expose sensitive information.

Software Description:
- yelp: Help browser for GNOME

Details:

It was discovered that Yelp incorrectly handled certain crafted help
documents due to an overly permissive Content Security Policy. An
attacker could trick a user into opening a specially crafted document,
possibly resulting in the disclosure of sensitive information.

Update instructions:

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

Ubuntu 26.04 LTS
libyelp-1-0 49.0-5ubuntu0.1
yelp 49.0-5ubuntu0.1

Ubuntu 24.04 LTS
libyelp0 42.2-1ubuntu0.24.04.2
yelp 42.2-1ubuntu0.24.04.2

Ubuntu 22.04 LTS
libyelp0 42.1-1ubuntu0.2
yelp 42.1-1ubuntu0.2

Ubuntu 20.04 LTS
libyelp0 3.36.2-0ubuntu1.1+esm1
Available with Ubuntu Pro
yelp 3.36.2-0ubuntu1.1+esm1
Available with Ubuntu Pro

Ubuntu 18.04 LTS
libyelp0 3.26.0-1ubuntu2+esm1
Available with Ubuntu Pro
yelp 3.26.0-1ubuntu2+esm1
Available with Ubuntu Pro

Ubuntu 16.04 LTS
libyelp0 3.18.1-1ubuntu4+esm1
Available with Ubuntu Pro
yelp 3.18.1-1ubuntu4+esm1
Available with Ubuntu Pro

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

References:
https://ubuntu.com/security/notices/USN-8627-1
CVE-2026-13601

Package Information:
https://launchpad.net/ubuntu/+source/yelp/49.0-5ubuntu0.1
https://launchpad.net/ubuntu/+source/yelp/42.2-1ubuntu0.24.04.2
https://launchpad.net/ubuntu/+source/yelp/42.1-1ubuntu0.2

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