PatchTheCVECVE-2026-44742: Postorius through 1.3.13 does not escape HTML in the message subject when rendering it in the Held messages po
CVE-2026-44742 is a high-severity flaw (CVSS 7.2) affecting postorius. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- High severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.2 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.2% (top 85%) |
| CISA exploited list | No |
| Weakness | CWE-79 |
| Published | 2026-05-07 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-44742?
postorius: upgrade to newer than 1.3.13. Exact commands for each OS are on this page.
Is CVE-2026-44742 being exploited?
CVE-2026-44742 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-44742 affect?
CVE-2026-44742 affects postorius. Severity is high (CVSS 7.2). 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 urgent is CVE-2026-44742?
Priority 34/100. High severity; Remotely exploitable, no login, no user action