CVE-2026-56093 TYPO3 CVE debrief

Who should care

Defenders and administrators responsible for Typo3 installations and extensions should assess exposure and verify access controls for siteHash and frontend user access filters in document lookup functionality.

Why it matters

CVE-2026-56093 is a medium-severity vulnerability in an extension's frontend detail-view document lookup functionality. Defenders and administrators responsible for Typo3 installations and extensions should assess exposure and verify access controls for siteHash and frontend user access filters. The vulnerability allows unauthorized access to documents for visitors who can obtain or guess a valid Solr document ID, increasing the risk of data breaches or information disclosure. Verification of access controls and filters is necessary to prevent potential unauthorized access.

• Potential unauthorized access to sensitive documents
• Increased risk of data breaches or information disclosure
• Need for verification of access controls and filters
• Potential for lateral movement or privilege escalation

Technical summary

The extension's frontend detail-view document lookup functionality does not apply siteHash and frontend user access filters, allowing unauthorized access to documents for visitors who can obtain or guess a valid Solr document ID. This vulnerability affects Typo3 installations and extensions, increasing the risk of data breaches or information disclosure. Defenders and administrators should assess exposure and verify access controls for siteHash and frontend user access filters to prevent potential unauthorized access.

Defensive priority

Assess exposure and verify access controls for siteHash and frontend user access filters in document lookup functionality.

Recommended defensive actions

• Assess exposure and verify access controls for siteHash and frontend user access filters in document lookup functionality
• Review and update access restrictions for document retrieval
• Monitor for potential unauthorized access attempts
• 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 Program and NVD records indicate a medium-severity vulnerability in an extension's frontend detail-view document lookup functionality. The issue allows unauthorized access to documents without siteHash and frontend user access filters.

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.