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.
References (3)
Core 3
Core References
Vendor Advisory vendor-advisory
https://typo3.org/security/advisory/typo3-core-sa-2026-018
Patch patch
Git commit of main branch
https://github.com/TYPO3/typo3/commit/48bcf24f31f52cc0b43d3bea4984634bd2cf85c7
Patch patch
Git commit of 13.4 branch
https://github.com/TYPO3/typo3/commit/87cd7c5b710c44d3606fed277b040a75dc6a9c02
Scores
CVSS v4
6.3
EPSS
0.0025
EPSS Percentile
48.3%
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-502
Status
published
Products (10)
typo3/cms-core
0 - 10.4.57Packagist
typo3/cms-core
11.0.0 - 11.5.51Packagist
typo3/cms-core
12.0.0 - 12.4.46Packagist
typo3/cms-core
13.0.0 - 13.4.31Packagist
typo3/cms-core
14.0.0 - 14.3.3Packagist
TYPO3/TYPO3 CMS
< 10.4.57
TYPO3/TYPO3 CMS
11.0.0 - 11.5.51
TYPO3/TYPO3 CMS
12.0.0 - 12.4.46
TYPO3/TYPO3 CMS
13.0.0 - 13.4.31
TYPO3/TYPO3 CMS
14.0.0 - 14.3.3
Published
Jun 09, 2026
Tracked Since
Jun 09, 2026