CVE-2026-1323
HIGHInsecure Deserialization in extension "Mailqueue" (mailqueue)
Title source: cnaDescription
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['TYPO3_CONF_VARS']['MAIL']['transport_spool_filepath'].
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
https://typo3.org/security/advisory/typo3-ext-sa-2026-005
Scores
CVSS v3
8.8
EPSS
0.0022
EPSS Percentile
11.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-502
Status
published
Products (4)
cps-it/mailqueue
< 0.4.5
cpsit/typo3-mailqueue
0 - 0.4.5Packagist
TYPO3/Extension "Mailqueue"
< 0.4.5
TYPO3/Extension "Mailqueue"
0.5.0 - 0.5.2
Published
Mar 17, 2026
Tracked Since
Mar 17, 2026