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Vulnerabilities CVE-2026-49740

CVE-2026-49740

Medium
Open
TLP:CLEAR

TYPO3 CMS - Insecure Deserialization in Core API

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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, 11.0.0-11.5.50, 12.0.0-12.4.45, 13.0.0-13.4.30 and 14.0.0-14.3.2.

Details

CVSS Score
6.3
EPSS Score
0.22%

12.3th percentile

CVSS Vector
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
Confidence
90%
Published
Jun 9, 2026
Last Modified
Jul 15, 2026
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