CVE-2026-0895 - Insecure Deserialization in extension "Mailqueue" (mailqueue)

Back Back to CVE browser

MEDIUM

Insecure Deserialization in extension "Mailqueue" (mailqueue)

Published Jan 20, 2026

5.2

MEDIUM

CVSS 4.0

EPSS 0.14%

Description

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 .

Affected products

Vendor TYPO3 Product Extension "Mailqueue" Default
unaffected
Affected
- ≥ 0, < 0.4.3
- ≥ 0.5.0, < 0.5.1

Default status is the baseline for the product. Each version can override it (patched versions can be marked unaffected).

Vendor	Product	Default status	Versions
TYPO3	Extension "Mailqueue"	unaffected	Affected ≥ 0, < 0.4.3 ≥ 0.5.0, < 0.5.1

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-502

Deserialization of Untrusted Data

References (7)

Link	Providers	Tags
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-3591		Advisory
https://github.com/CPS-IT/mailqueue/commit/12a0a35027bb5609917790a94e43bbf117abf733		patch
https://github.com/CPS-IT/mailqueue/commit/fd09aa4e1a751551bae4b228bee814e22f2048db		patch
https://github.com/CPS-IT/mailqueue/security/advisories/GHSA-ggff-9mj3-7246
https://github.com/advisories/GHSA-ggff-9mj3-7246		Advisory
https://nvd.nist.gov/vuln/detail/CVE-2026-0895
https://typo3.org/security/advisory/typo3-ext-sa-2026-001		vendor-advisory