CVE-2026-44742: Postorius Project Postorius

Medium severity, CVSS 6.1. EPSS: 0.3% 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.

Affected products

• Postorius Project Postorius: up to and including 1.3.13

Published 2026-05-07. Last modified 2026-06-17.