CVE-2026-1323
Description
The extension fails to properly define allowed classes used when deserializing transport failure metadata. An attacker may exploit this to execute untrusted serialized code. Note that an active exploit requires write access to the directory configured at $GLOBALS['TYPO3CONFVARS']['MAIL']['transportspoolfilepath'].
Package Versions Affected
Automatically patch vulnerabilities without upgrading
CVSS Version



Related Resources
References
https://github.com/CPS-IT/mailqueue/security/advisories/GHSA-2pm6-9fhx-vvg3, https://nvd.nist.gov/vuln/detail/CVE-2026-1323, https://github.com/CPS-IT/mailqueue/commit/0f7a1376bbbd8c7658030d02e51c10a85b1dfdf7, https://github.com/CPS-IT/mailqueue/commit/600c7dba99f8eea5f2505b848ee3dd4713440741, https://github.com/CPS-IT/mailqueue, https://typo3.org/security/advisory/typo3-ext-sa-2026-005
