CVE-2026-49740
Description
TYPO3's cache frontend (VariableFrontend) and persistent key-value store (Registry) deserialized PHP payloads without integrity validation or class restrictions. An attacker with write access to the underlying storage backend (cache store or sys_registry database table) could inject a crafted serialized payload to trigger PHP Object Injection, potentially exploiting a gadget chain to achieve Remote Code Execution or other high-impact effects. Exploiting this vulnerability requires direct local write access to the storage, such as the SQL database or file system. This issue affects TYPO3 CMS versions before 10.4.57, 11.0.0-11.5.51, 12.0.0-12.4.46, 13.0.0-13.4.31 and 14.0.0-14.3.3.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
typo3/cms-corePackagist | < 10.4.57 | 10.4.57 |
typo3/cms-corePackagist | >= 11.0.0, < 11.5.51 | 11.5.51 |
typo3/cms-corePackagist | >= 12.0.0, < 12.4.46 | 12.4.46 |
typo3/cms-corePackagist | >= 13.0.0, < 13.4.31 | 13.4.31 |
typo3/cms-corePackagist | >= 14.0.0, < 14.3.3 | 14.3.3 |
Affected products
2Patches
Vulnerability mechanics
References
7- github.com/advisories/GHSA-c78m-c52x-jgwpghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-49740ghsaADVISORY
- github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2026-49740.yamlghsaWEB
- github.com/TYPO3/typo3/commit/48bcf24f31f52cc0b43d3bea4984634bd2cf85c7nvdWEB
- github.com/TYPO3/typo3/commit/87cd7c5b710c44d3606fed277b040a75dc6a9c02nvdWEB
- github.com/TYPO3/typo3/security/advisories/GHSA-c78m-c52x-jgwpghsaWEB
- typo3.org/security/advisory/typo3-core-sa-2026-018nvdWEB
News mentions
1- TYPO3 CMS: Thirteen Backend Vulnerabilities Disclosed on June 9, 2026Vypr Intelligence · Jun 9, 2026