CVE-2026-44742
MEDIUMCVSS 6.1/10EPSS 0.24%
Last modified
CVE-2026-44742 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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.. EPSS estimates a 0.24% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Postorius Project | Postorius | <= 1.3.13 |
References
- https://gitlab.com/mailman/postorius/-/issues/620Issue Tracking, Vendor Advisory
- https://gitlab.com/mailman/postorius/-/merge_requests/972Issue Tracking, Patch
- https://www.openwall.com/lists/oss-security/2026/05/07/3Mailing List, Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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.
How severe is CVE-2026-44742?
CVE-2026-44742 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.24% probability of exploitation in the next 30 days.
How do I fix CVE-2026-44742?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2026-44742?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST