TYPO3 CMS - Information Disclosure via Backend Localization Wizard (CVE-2026-77132) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-77132

TYPO3 CMS - Information Disclosure via Backend Localization Wizard

Answer in brief

CVE-2026-77132 records a Unknown severity vulnerability in TYPO3 CMS - Information Disclosure via Backend Localization Wizard. The current sources do not mark it as known exploited. The current feed maps TYPO3/TYPO3 CMS (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 8, 2026Updated Sep 8, 2026Source checked Sep 8, 2026First seen by HOL Sep 8, 2026Material review Sep 8, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps TYPO3/TYPO3 CMS (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
TYPO3/TYPO3 CMSgeneric	>=10.0.0 <10.4.60 \|\| >=11.0.0 <11.5.54 \|\| >=12.0.0 <12.4.49 \|\| >=13.0.0 <13.4.35 \|\| >=14.0.0 <14.3.7	10.4.60, 11.5.54, 12.4.49, 13.4.35, 14.3.7

Recommended response

Check inventory. Check lockfiles and deployed manifests for TYPO3/TYPO3 CMS.
Review the reported fix. Update TYPO3/TYPO3 CMS to 10.4.60 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 8, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.