CVE-2026-49740

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.

• CWE-502

• https://github.com/TYPO3/typo3/commit/48bcf24f31f52cc0b43d3bea4984634bd2cf85c7
• https://github.com/TYPO3/typo3/commit/87cd7c5b710c44d3606fed277b040a75dc6a9c02
• https://typo3.org/security/advisory/typo3-core-sa-2026-018

Published

Jun 9, 2026

Last Modified

Jul 23, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-4970A security flaw has been discovered in code-projects Social …6.3
• CVE-2026-4971A weakness has been identified in SourceCodester Note Taking…4.3
• CVE-2026-4972A security vulnerability has been detected in code-projects …2.4
• CVE-2026-4973A vulnerability was detected in SourceCodester Online Quiz S…3.5
• CVE-2026-49738The path allowance check in GeneralUtility::isAllowedAbsPath…2.1
• CVE-2026-4974A flaw has been found in Tenda AC7 15.03.06.44. Affected by …8.8
• CVE-2026-49741Backend users with write access to the form_definition datab…8.7
• CVE-2026-49742Backend users with file download permissions were able to do…7.1
• CVE-2026-49743Software installed and run as a non-privileged user may cond…7.8
• CVE-2026-49744Kernel software installed and running inside a Guest VM may …7.8
• CVE-2026-49745Kernel software installed and running inside a Guest VM may …7.8
• CVE-2026-49746Software installed and run as a non-privileged user may cond…7.1