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CVE-2026-49742 TYPO3 CVE debrief

CVE-2026-49742 is a HIGH-severity vulnerability affecting 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. The issue allows backend users with file download permissions 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. The vulnerability has a CVSS score of 7.1 and is classified as CWE-22 and CWE-200.

Vendor
TYPO3
Product
TYPO3 CMS
CVSS
HIGH 7.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-06-09
Advisory published
2026-06-09
Advisory updated
2026-06-09

Who should care

Users of 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 should be aware of this vulnerability and take necessary actions to mitigate it.

Technical summary

The vulnerability exists in the file abstraction layer (FAL) of TYPO3 CMS, specifically in the Media Module. Backend users with file download permissions can exploit this vulnerability to download files from the fallback storage, potentially exposing sensitive files.

Defensive priority

HIGH

Recommended defensive actions

  • Update TYPO3 CMS to a version outside of the affected ranges (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).
  • Restrict file download permissions to only necessary users.
  • Monitor Media Module usage and logs for suspicious activity.

Evidence notes

The CVE-2026-49742 vulnerability was published on [cve-org](https://www.cve.org/CVERecord?id=CVE-2026-49742) and has additional details on [nvd](https://nvd.nist.gov/vuln/detail/CVE-2026-49742).

Sources and references

Verified primary and authoritative sources

  • CVE-2026-49742 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-49742

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-49742 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-49742

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://github.com/TYPO3/typo3/commit/ad636b6183843b57c758a1e12174a75093ac93c3

    f4fb688c-4412-4426-b4b8-421ecf27b14a

  • Source reference

    Unverified legacy reference

    URL: https://github.com/TYPO3/typo3/commit/caa6b444d7ab1bdd1eb76a68004c8be73d98e6ae

    f4fb688c-4412-4426-b4b8-421ecf27b14a

  • Source reference

    Unverified legacy reference

    URL: https://typo3.org/security/advisory/typo3-core-sa-2026-013

    f4fb688c-4412-4426-b4b8-421ecf27b14a

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.