[Pkg-mailman-hackers] Bug#1136003: postorius: CVE-2026-44742

[Moritz Mühlenhoff]

Source: postorius
X-Debbugs-CC: team at security.debian.org
Severity: grave
Tags: security

Hi,

The following vulnerability was published for postorius.

CVE-2026-44742[0]:
| Postorius through 1.3.13 does not escape HTML in the message subject
| when rendering it in the Held messages pop-up, as exploited in the
| wild in May 2026.

https://gitlab.com/mailman/postorius/-/commit/c4706abd05ba6bcf472fc674b160d3a9d6a4868b
https://gitlab.com/mailman/postorius/-/merge_requests/972

I'm preparing a DSA as well.



If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-44742
    https://www.cve.org/CVERecord?id=CVE-2026-44742

Please adjust the affected versions in the BTS as needed.