CIVI-SA-2026-30: Stored XSS in File Attachments

Security Risk
Moderately Critical
Vulnerability
Cross Site Scripting
Affected Versions

CiviCRM v6.15.2 and earlier

Fixed Versions

CiviCRM v6.15.3, v6.10.7 (ESR), and later

Publication Date
Solutions

Upgrade to a fixed version of CiviCRM

Credits

Lassi (lassitemp@proton.me), Luke Stewart (Fuzion), Seamus Lee (JMA Consulting), Coleman Watts (CiviCRM), Tim Otten (CiviCRM), Patrick Figel (Greenpeace Central and Eastern Europe)