---
id: CVE-2026-77145
title: >-
  The permission check for the frontend management update flow verified a
  different event than the one the request went on to modify
summary: >-
  The permission check for the frontend management update flow verified a
  different event than the one the request went on to modify. A user with
  frontend event management access could therefore modify events belonging to
  other organizers.
severity: none
cwe:
  - CWE-639
published: '2026-08-25'
updated: '2026-09-28'
sourceUpdated: '2026-09-28T23:10:00.143'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77145'
references:
  - url: 'https://typo3.org/security/advisory/typo3-ext-sa-2026-026'
    label: f4fb688c-4412-4426-b4b8-421ecf27b14a
tags:
  - nvd
ingestedAt: '2026-09-28T23:23:00.544Z'
---

## Overview

The permission check for the frontend management update flow verified a different event than the one the request went on to modify. A user with frontend event management access could therefore modify events belonging to other organizers.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.