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[USN-8552-1] Sympa vulnerability

Posted on 15 July 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8552-1
July 15, 2026

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

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

Summary:

Sympa could allow unintended access to network services.

Software Description:
- sympa: mailing list management software

Details:

It was discovered that Sympa did not properly validate input on the
generic SSO login. A remote attacker could possibly use this issue to
perform a path traversal attack and gain unintended access.

Update instructions:

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

Ubuntu 24.04 LTS
sympa 6.2.70~dfsg-2+deb12u1build0.24.04.1

Ubuntu 22.04 LTS
sympa 6.2.66~dfsg-2ubuntu0.1~esm1
Available with Ubuntu Pro

Ubuntu 20.04 LTS
sympa 6.2.40~dfsg-4ubuntu0.20.04.1~esm2
Available with Ubuntu Pro

Ubuntu 18.04 LTS
sympa 6.2.24~dfsg-1ubuntu0.1~esm2
Available with Ubuntu Pro

Ubuntu 16.04 LTS
sympa 6.1.24~dfsg-1ubuntu0.1~esm1
Available with Ubuntu Pro

After a standard system update you need to restart sympa to make
all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-8552-1
CVE-2024-55919

Package Information:
https://launchpad.net/ubuntu/+source/sympa/6.2.70~dfsg-2+deb12u1build0.24.04.1

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