CVE-2026-56094 Information Disclosure in extension "Apache Solr for TYPO3 - Enterprise Search" (solr)
Attackers can read public documents from other sites in a shared Solr core by manipulating the additionalFilters parameter.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-56094?
CVE-2026-56094 is a medium-severity vulnerability in Extension "Apache Solr for TYPO3 - Enterprise Search", published on 25 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-943
Which versions are affected by CVE-2026-56094?
How do I fix CVE-2026-56094?
No fix has been published for CVE-2026-56094 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-56094 being exploited?
There is no known exploitation of CVE-2026-56094 in the wild and no public exploit code.
Sources
Also known as GHSA-9xwm-q597-w98q.