CVE-2026-77129
Published:August 25, 2026
Updated:September 24, 2026
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 Packages
derhansen/sf_event_mgt (PHP):
Affected version(s) >=7.0.0 <7.9.3Fix Suggestion:
Update to version 7.9.3derhansen/sf_event_mgt (PHP):
Affected version(s) >=8.0.0 <8.6.2Fix Suggestion:
Update to version 8.6.2derhansen/sf_event_mgt (PHP):
Affected version(s) >=6.0.0 <6.7.2Fix Suggestion:
Update to version 6.7.2derhansen/sf_event_mgt (PHP):
Affected version(s) >=9.0.0 <9.0.3Fix Suggestion:
Update to version 9.0.3derhansen/sf_event_mgt (PHP):
Affected version(s) >=1.2.0 <5.9.3Fix Suggestion:
Update to version 5.9.3Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Neutralization of Special Elements Used in a Template Engine
EPSS
Base Score:
0.23