CVE-2026-77129

Server-Side Template Injection in extension "Event management and registration" (sf_event_mgt)

State: Published
Severity: 7.7 High
Published: Aug 25, 2026
Updated: Aug 25, 2026
Reserved: Aug 20, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	7.7 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	TYPO3

Weaknesses

CWE-1336 Improper Neutralization of Special Elements Used in a Template Engine

Affected Products

Product	Versions
Extension "Event management and registration"TYPO3	9.0.0 to before 9.0.3Affected 8.0.0 to before 8.6.2Affected 7.0.0 to before 7.9.3Affected 6.0.0 to before 6.7.2Affected before 5.9.3Affected

References

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

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.