---
id: CVE-2026-77132
title: >-
  It has been discovered that several AJAX routes used for the backend
  localization wizard failed to perform authorization checks
summary: >-
  It has been discovered that several AJAX routes used for the backend
  localization wizard failed to perform authorization checks. This allowed
  authenticated, low-privileged backend users to access information about
  records and content ele…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'
cwe:
  - CWE-200
  - CWE-862
vendor: TYPO3
product: typo3/cms-backend
affected:
  - typo3/cms-backend >= 10.0.0 < 10.4.60
  - typo3/cms-backend >= 11.0.0 < 11.5.54
  - typo3/cms-backend >= 12.0.0 < 12.4.49
  - typo3/cms-backend >= 13.0.0 < 13.4.35
  - typo3/cms-backend >= 14.0.0 < 14.3.7
published: '2026-09-08'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T19:15:18.627'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77132'
references:
  - url: >-
      https://github.com/TYPO3/typo3/commit/1c63ce806d1ccac839f4aa54ac7f48a22dd7ea64
    label: f4fb688c-4412-4426-b4b8-421ecf27b14a
  - url: >-
      https://github.com/TYPO3/typo3/commit/35e070fc654def838fbdc45562c2c095d44ca086
    label: f4fb688c-4412-4426-b4b8-421ecf27b14a
  - url: >-
      https://github.com/TYPO3/typo3/commit/c232421325bd18fc4d13efac0fc018a57da2dcd6
    label: f4fb688c-4412-4426-b4b8-421ecf27b14a
  - url: 'https://news.typo3.com/security/advisory/typo3-core-sa-2026-022'
    label: f4fb688c-4412-4426-b4b8-421ecf27b14a
tags:
  - nvd
  - cve.org
epss: 0.00427
epssPercentile: 0.34367
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-08T12:21:38.169127Z'
cvssSource: cna
ingestedAt: '2026-09-08T15:33:26.983Z'
---

## Overview

It has been discovered that several AJAX routes used for the backend localization wizard failed to perform authorization checks. This allowed authenticated, low-privileged backend users to access information about records and content elements that fall outside of their permitted range. Exploiting this vulnerability requires a low-privileged backend user account. This issue affects TYPO3 CMS versions 10.0.0-10.4.59, 11.0.0-11.5.53, 12.0.0-12.4.48, 13.0.0-13.4.34 and 14.0.0-14.3.6.

## Remediation

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