CVE-2026-0895

The extension extends TYPO3’ FileSpool component, which was vulnerable to Insecure Deserialization prior to TYPO3-CORE-SA-2026-004 https://typo3.org/security/advisory/typo3-core-sa-2026-004 . Since the related fix is overwritten by the extension, using the extension with a patched TYPO3 core version still allows for Insecure Deserialization, because the affected vulnerable code was extracted from TYPO3 core to the extension. More information about this vulnerability can be found in the related TYPO3 Core Security Advisory TYPO3-CORE-SA-2026-004 https://typo3.org/security/advisory/typo3-core-sa-2026-004 .

Score

CVSS 4.0 5.2 Medium

Status

Deferred - f4fb688c-4412-4426-b4b8-421ecf27b14a

Published

2026-01-20

Last modified

2026-01-20

Weaknesses

CWE-502

Affected products

• Extension Mailqueue (Typo3)

References

• https://github.com/CPS-IT/mailqueue/commit/12a0a35027bb5609917790a94e43bbf117abf733
• https://github.com/CPS-IT/mailqueue/commit/fd09aa4e1a751551bae4b228bee814e22f2048db
• https://typo3.org/security/advisory/typo3-ext-sa-2026-001