CVE-2026-56095

Insecure Deserialization in extension "Apache Solr for TYPO3 - Enterprise Search" (solr)

State: Published
Severity: 7.7 High
Published: Aug 25, 2026
Updated: Sep 17, 2026
Reserved: Jun 18, 2026

Description

The extension's indexer passed every field value returned by content object rendering through PHP's unserialize() function when transferring multi-value data for the SOLR_CLASSIFICATION, SOLR_MULTIVALUE and SOLR_RELATION content object types, rather than a safe format. If user-generated content saved in the TYPO3 database can reach an indexed field, this exposes a PHP Object Injection surface.

Scores

CVSS	Score	Vector	Source
4.0	7.7 High	CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	TYPO3

Weaknesses

CWE-502 Deserialization of Untrusted Data

Affected Products

Product	Versions
Extension "Apache Solr for TYPO3 - Enterprise Search"TYPO3	13.0.0 to before 13.1.4Affected 12.0.0 to before 12.1.4Affected 11.5.0 to before 11.6.6Affected

References

https://typo3.org/security/advisory/typo3-ext-sa-2026-025vendor-advisory

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