CVE-2020-1961: Apache Syncope

Critical severity, CVSS 9.8. EPSS: 4.8% chance of exploitation in the next 30 days.

Vulnerability to Server-Side Template Injection on Mail templates for Apache Syncope 2.0.X releases prior to 2.0.15, 2.1.X releases prior to 2.1.6, enabling attackers to inject arbitrary JEXL expressions, leading to Remote Code Execution (RCE) was discovered.

Affected products

• Apache Syncope: from 2.0.0, before 2.0.15 (fixed in 2.0.15); from 2.1.0, before 2.1.6 (fixed in 2.1.6)

Published 2020-05-04. Last modified 2026-06-17.