CVE-2010-4764: Otrs

Medium severity, CVSS 5.0. EPSS: 1.5% chance of exploitation in the next 30 days.

Open Ticket Request System (OTRS) before 2.4.10, and 3.x before 3.0.3, does not present warnings about incoming encrypted e-mail messages that were based on revoked PGP or GPG keys, which makes it easier for remote attackers to spoof e-mail communication by leveraging a key that has a revocation signature.

Affected products

• Otrs Otrs: version 3.0.0 only; version 3.0.1 only; version 3.0.2 only; up to and including 2.4.9; version 0.5 only; version 1.0 only; …

Published 2011-03-18. Last modified 2026-06-16.