SB2026082626 - Multiple vulnerabilities in Event management and registration extension for TYPO3

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Main Vulnerability Database SB2026082626

SB2026082626 - Multiple vulnerabilities in Event management and registration extension for TYPO3

Published: August 26, 2026

Security Bulletin ID SB2026082626
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Missing Authorization (CVE-ID: CVE-2026-77128)

CWE-ID: CWE-862 - Missing Authorization

CVSSv4: 7.7 [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]


The vulnerability allows a remote attacker to bypass authorization checks.

The vulnerability exists due to the affected extension fails to enforce enable-field restrictions on a repository query parameter. A remote user can pass a demand-override parameter to view hidden or time-restricted events.


2) Improper Neutralization of Special Elements Used in a Template Engine (CVE-ID: CVE-2026-77129)

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

CVSSv4: 7.7 [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]


The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the affected extension passes an editor-configurable email subject string directly into a Fluid template source without restriction. A remote user can supply Fluid ViewHelper syntax in this field to disclose sensitive data or execute TypoScript content objects.


Remediation

Install update from vendor's website.

References