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CVE-2026-49738

TYPO3 CMS - Broken Access Control in File Abstraction Layer

LOW
2.1
CVSS Score
Published: June 9, 2026 at 10:53 AM UTC
Updated: July 23, 2026 at 07:32 PM UTC
1 product affected across 1 vendorTYPO3

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Severity
LOW2.1
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

The path allowance check in GeneralUtility::isAllowedAbsPath() performed a plain string prefix comparison without requiring a directory separator boundary, causing a path like /var/www/html-other/secret.yaml to be incorrectly accepted as valid when the project root was /var/www/html. Administrator users with access to the File Abstraction Layer were able to create new file storage definitions pointing to directories outside the project root, bypassing this path check. This issue affects TYPO3 CMS versions before 10.4.57, 11.0.0-11.5.51, 12.0.0-12.4.46, 13.0.0-13.4.31 and 14.0.0-14.3.3.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

TYPO3· TYPO3composer
95%
v < 10.4.5711.0.0 ≤ v < 11.5.5112.0.0 ≤ v < 12.4.4613.0.0 ≤ v < 13.4.3114.0.0 ≤ v < 14.3.311.0.012.0.013.0.014.0.0
Affected range stops below 10.4.57, so it looks safe — our inference, not a vendor statement
Affected range stops below 11.5.51, so it looks safe — our inference, not a vendor statement
Affected range stops below 12.4.46, so it looks safe — our inference, not a vendor statement
Affected range stops below 13.4.31, so it looks safe — our inference, not a vendor statement
Affected range stops below 14.3.3, so it looks safe — our inference, not a vendor statement

References (3)

Vendor Advisory
Source: cverecord
https://typo3.org/security/advisory/typo3-core-sa-2026-016
Patch
Source: cverecord
https://github.com/TYPO3/typo3/commit/44c2fa9807944136218a0842e3051c0a379a002d
Patch
Source: cverecord
https://github.com/TYPO3/typo3/commit/150a983a5d687cedcfc33bbe9c335d9a13fd05e5

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

2.1LOWTYPO3
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-22

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