CVE-2026-77129 — Server-Side Template Injection in extension "Event management and registration" (sf_event_mgt)

Description (CNA)

The extension passes an editor-configurable email subject string directly into a Fluid template source without restriction. A backend user with edit access to the event plugin or Backend Module can supply Fluid ViewHelper syntax in this field to disclose sensitive data or execute TypoScript content objects. Exploitation of this issue requires an authenticated backend account with edit access to the event registration plugin or backend module.

Affected (CNA)

Vendor / product	Versions
TYPO3 / Extension "Event management and registration"	affected 9.0.0 before 9.0.3; affected 8.0.0 before 8.6.2; affected 7.0.0 before 7.9.3; affected 6.0.0 before 6.7.2; affected 0 before 5.9.3

CWE

CWE-1336

References

https://typo3.org/security/advisory/typo3-ext-sa-2026-023

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.