TYPO3 CMS - Broken Access Control in Media Module

published 2026-06-09 5 mo ago modified 2026-09-10 1 mo ago also GHSA-chm7-4vch-h8vr , EUVD-2026-35403

cvss: 7.1; version 4.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 24%
public exploits: 0; none known

Backend users with file download permissions were able to download files from the fallback storage of the file abstraction layer (FAL) via the Media Module. Since the fallback storage resolves paths relative to the server's document root, this could expose sensitive files such as log files. This issue affects TYPO3 CMS versions 11.0.0-11.5.50, 12.0.0-12.4.45, 13.0.0-13.4.30 and 14.0.0-14.3.2.

Patch / fix

fixed in 3 links 2

packagist typo3/cms-core 11.5.51, 12.4.46, 13.4.31, 14.3.3
packagist typo3/cms-filelist 11.5.51, 12.4.46, 13.4.31, 14.3.3
TYPO3 TYPO3 CMS 11.5.51, 12.4.46, 13.4.31, 14.3.3

github.com/TYPO3/typo3@caa6b44 commit
github.com/TYPO3/typo3@ad636b6 commit

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 5 mo ago (2026-06-09)

Exploit prediction

0.31% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	7.1	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CNA	4.0	7.1	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected packages

ecosystem	package	affected	fixed in
packagist	typo3/cms-core	>=11.0.0, <11.5.51 >=12.0.0, <12.4.46 >=13.0.0, <13.4.31 >=14.0.0, <14.3.3	11.5.51 12.4.46 13.4.31 14.3.3
packagist	typo3/cms-filelist	>=11.0.0, <11.5.51 >=12.0.0, <12.4.46 >=13.0.0, <13.4.31 >=14.0.0, <14.3.3	11.5.51 12.4.46 13.4.31 14.3.3

Affected products

TYPO3 TYPO3 CMS

Classification

Weakness

CWE-22 Improper Limitation of a Pathname to a Restricted Directory
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

github.com /TYPO3/typo3/commit/caa6b444d7ab1bdd1eb76a68004c8be73d98e6ae
patch, web
github.com /TYPO3/typo3/commit/ad636b6183843b57c758a1e12174a75093ac93c3
patch, web
typo3.org /security/advisory/typo3-core-sa-2026-013
vendor-advisory, web
github.com /TYPO3/typo3/security/advisories/GHSA-chm7-4vch-h8vr
web
nvd.nist.gov /vuln/detail/CVE-2026-49742
advisory
github.com /FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2026-49742.yaml
web
github.com /TYPO3/typo3
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary