CVSS 3.1
6.1 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NCVE-2026-44742
Medium (6.1) in postorius project postorius. EPSS 0.2% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 14% of CVEs (scores of 2026-10-31)
- CWE
- CWE-79
- Published
- Modified
- Record from
- the NVD, synced
Affected
- postorius_project:postorius
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-r7c9-7pjq-hmm8 | PyPI | postorius | <=1.3.13 | no fix published |
| PYSEC-2026-2891 | PyPI | postorius | <=1.3.13 | no fix published |
References
- https://gitlab.com/mailman/postorius/-/commit/c4706abd05ba6bcf472fc674b160d3a9d6a4868b
- https://gitlab.com/mailman/postorius/-/issues/620
- https://gitlab.com/mailman/postorius/-/merge_requests/972
- https://www.openwall.com/lists/oss-security/2026/05/07/3
- https://lists.debian.org/debian-lts-announce/2026/05/msg00045.html