CVE-2026-112069 TYPO3 CVE debrief

Who should care

TYPO3 14.3 site administrators and security teams responsible for web application security. They should verify their configurations and update affected extensions to prevent potential unauthorized access and data exposure. This includes reviewing file storage configurations for non-default relative base paths and implementing compensating controls to restrict unauthorized access. Security teams should also review and update TYPO3 14.3 installations using

Why it matters

CVE-2026-112069 is a medium-severity vulnerability in a TYPO3 extension that bypasses access protection for files in certain file storages on TYPO3 14.3 sites. Site administrators should verify their configurations and update affected extensions to prevent potential unauthorized access and data exposure.

• Potential unauthorized access to sensitive files
• Need to verify file storage configurations and update affected extensions
• Possible data exposure through direct web server access

Technical summary

The TYPO3 extension failed to apply access protection to files in file storages with non-default relative base paths when used on TYPO3 14.3. This allowed files to be served directly by the web server without authentication or permission checks. The issue is only exploitable when the extension is used on a website running TYPO3 14.3. Official sources confirm this issue. Site administrators should verify their configurations and update affected extensions to prevent potential unauthorized access and data exposure. The CVE record indicates that the TYPO3 extension did not apply access protection to files in certain file storages, allowing direct web server access without authentication or permission checks when

Defensive priority

Medium priority for TYPO3 14.3 site administrators

Recommended defensive actions

• Review and update TYPO3 14.3 installations using the affected extension
• Verify file storage configurations for non-default relative base paths
• Implement compensating controls to restrict unauthorized access
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record indicates that the TYPO3 extension did not apply access protection to files in certain file storages, allowing direct web server access without authentication or permission checks when used on TYPO3 14.3. Official sources confirm this issue.

Sources and references

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.