Extension "Apache Solr for TYPO3 - Enterprise Search" vulnerability

What happened

The extension forces empty frontend-group and subpage-inheritance restrictions onto page records during indexer sub-requests, and this forged state was persisted into the shared rootline cache, allowing anonymous visitors to bypass extendToSubpages-inherited access restrictions on cached pages.

Affected versions

Extension "Apache Solr for TYPO3 - Enterprise Search": 13.0.0 through before 13.1.4 (semver); 12.0.0 through before 12.1.4 (semver); 11.5.0 through before 11.6.6 (semver); before 11.2.8 (semver) Fixed: See vendor advisory.

Why it matters

Review the vendor advisory and exposure of the affected product to determine operational impact.

Detection & mitigation

• Apply vendor-provided updates or mitigations.
• Review affected product exposure and access logs.