---
id: CVE-2026-77142
title: >-
  The frontend company self-service editing feature relies on a template-level
  visibility flag to hide the edit form for company records a visitor does not
  own, but the corresponding write operation does not repeat this ownership
  check on …
summary: >-
  The frontend company self-service editing feature relies on a template-level
  visibility flag to hide the edit form for company records a visitor does not
  own, but the corresponding write operation does not repeat this ownership
  check on …
severity: none
cwe:
  - CWE-639
  - CWE-862
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-2026-77142'
references:
  - url: 'https://typo3.org/security/advisory/typo3-ext-sa-2026-020'
    label: f4fb688c-4412-4426-b4b8-421ecf27b14a
tags:
  - nvd
ingestedAt: '2026-09-28T23:23:00.543Z'
---

## Overview

The frontend company self-service editing feature relies on a template-level visibility flag to hide the edit form for company records a visitor does not own, but the corresponding write operation does not repeat this ownership check on the server side. As a result, a visitor who knows the identifier of a company record from the public directory can submit a modified update request for that record directly and overwrite its data, without the application ever confirming that the visitor owns it.

## Remediation

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