high7.2
CVE-2026-44742
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.
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | postorius | <= 1.3.13 | none recorded |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Postorius Project | Postorius | through 1.3.13 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-r7c9-7pjq-hmm8
- https://nvd.nist.gov/vuln/detail/CVE-2026-44742
- 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