What’s Vulnerable › Vulnerabilities
CVE-2026-56094: Information Disclosure in extension "Apache Solr for TYPO3 - Enterprise Search" (solr)
- Severity: medium (CVSS 6.3 v4.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-25 · updated 2026-09-17
- Weakness: CWE-943
Description
The extension allows a request-provided additionalFilters parameter to register a named siteHash filter before the system's own siteHash filter is applied, and the query builder does not overwrite an already-registered named filter. In a shared Solr core serving multiple TYPO3 sites, a visitor can use this to read public documents belonging to another site. The same root cause also affects the suggest top-results path when suggest is enabled.
Affected products
- TYPO3 Extension "Apache Solr for TYPO3 - Enterprise Search": from 13.0.0 before 13.1.4; from 12.0.0 before 12.1.4; from 11.5.0 before 11.6.6; before 11.2.8 — fixed in 11.2.8, 11.6.6, 12.1.4, 13.1.4
How to fix
Upgrade to a fixed version: TYPO3 Extension "Apache Solr for TYPO3 - Enterprise Search" 11.2.8, 11.6.6, 12.1.4, 13.1.4. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2026-56094 or the next vulnerability affects your stack