| Name | CVE-2026-44742 |
| Description | 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| postorius (PTS) | bullseye (security), bullseye | 1.3.4-2+deb11u1 | vulnerable |
| bookworm | 1.3.8-3 | vulnerable | |
| forky, sid, trixie | 1.3.13-1 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| postorius | source | (unstable) | (unfixed) |
https://gitlab.com/mailman/postorius/-/commit/c4706abd05ba6bcf472fc674b160d3a9d6a4868b
https://gitlab.com/mailman/postorius/-/merge_requests/972