CVE-2021-36093: Otrs

Medium severity, CVSS 5.3. EPSS: 1.1% chance of exploitation in the next 30 days.

It's possible to create an email which can be stuck while being processed by PostMaster filters, causing DoS. This issue affects: OTRS AG ((OTRS)) Community Edition 6.0.x version 6.0.1 and later versions. OTRS AG OTRS 7.0.x version 7.0.28 and prior versions; 8.0.x version 8.0.15 and prior versions.

Affected products

• Otrs Otrs: from 6.0.1; from 7.0.0, before 7.0.29 (fixed in 7.0.29); from 8.0.0, before 8.0.16 (fixed in 8.0.16)

Published 2021-09-06. Last modified 2026-06-17.