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CVE-2026-47343 — Vulnerability in typo3/cms-core — CVE Details

HIGH

TYPO3 CMS: Destructive Actions on File Mount Folders

Published June 12, 2026Updated September 10, 2026Source: osv

Summary

### Problem Non-privileged backend users with file mount access were able to perform write operations (move, delete, rename) on folders representing the root of an active file mount due to missing authorization restrictions. ### Solution Update to TYPO3 versions 10.4.57 ELTS, 11.5.51 ELTS, 12.4.46 ELTS, 13.4.31 LTS, 14.3.3 LTS that fix the problem described. ### Credits TYPO3 CMS thanks Arne Uplegger for reporting this issue, and TYPO3 security team member Elias Häußler for fixing it. ### Resources * [TYPO3-CORE-SA-2026-007](https://typo3.org/security/advisory/typo3-core-sa-2026-007)

Advisory Timeline

  • First published June 12, 2026 (122 days ago).
  • Last revised September 10, 2026 — 89 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Composer
Update typo3/cms-core to 13.4.31 or later
composer require "typo3/cms-core:^13.4.31"
Composer
Update typo3/cms-core to 11.5.51 or later
composer require "typo3/cms-core:^11.5.51"
Composer
Update typo3/cms-core to 12.4.46 or later
composer require "typo3/cms-core:^12.4.46"
Composer
Update typo3/cms-core to 10.4.57 or later
composer require "typo3/cms-core:^10.4.57"
Composer
Update typo3/cms-core to 14.3.3 or later
composer require "typo3/cms-core:^14.3.3"

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (5)

Affects 1 ecosystem: packagist (1).

PackageEcosystemAffectedFixed In
typo3/cms-core
packagist
v13.0.0, v13.0.1, v13.1.0, v13.1.1 (+35 more)13.4.31
typo3/cms-core
packagist
v11.0.0, v11.1.0, v11.1.1, v11.2.0 (+47 more)11.5.51
typo3/cms-core
packagist
v12.0.0, v12.1.0, v12.1.1, v12.1.2 (+49 more)12.4.46
typo3/cms-core
packagist
v10.0.0, v10.1.0, v10.2.0, v10.2.1 (+106 more)10.4.57
typo3/cms-core
packagist
v14.0.0, v14.0.1, v14.0.2, v14.1.0 (+5 more)14.3.3

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-862
    Missing AuthorizationMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 7.6 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
—
Confidentiality
—
Integrity
—
Availability
—

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N

References

Frequently Asked Questions

What is CVE-2026-47343?
TYPO3 CMS: Destructive Actions on File Mount Folders This vulnerability has been assigned a severity rating of HIGH (CVSS score: 7.6/10).
How do I check if my project is affected by CVE-2026-47343?
CVE-2026-47343 affects typo3/cms-core. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-47343 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
7.6

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-3v8v-4wg6-r7qh

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