Vulnerability Monitor

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CVE-2026-0859

TYPO3's mail‑file spool deserialization flaw lets local users with write access to the spool directory craft a malicious file that is deserialized during the mailer:spool:send command, enabling arbitrary PHP code execution on the web server. This issue affects TYPO3 CMS versions 10.0.0-10.4.54, 11.0.0-11.5.48, 12.0.0-12.4.40, 13.0.0-13.4.22 and 14.0.0-14.0.1.

Published

2026-01-13T12:15:50.383

Last Modified

2026-01-14T18:57:50.443

Status

Analyzed

Source

f4fb688c-4412-4426-b4b8-421ecf27b14a

Severity

CVSSv3.1: 7.8 (HIGH)

Weaknesses

Type: Secondary
CWE-502

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	typo3	typo3	< 10.4.55	Yes
Application	typo3	typo3	< 11.5.49	Yes
Application	typo3	typo3	< 12.4.41	Yes
Application	typo3	typo3	< 13.4.23	Yes
Application	typo3	typo3	< 14.0.2	Yes

References

https://github.com/TYPO3/typo3/commit/3225d705080a1bde57a66689621c947da5a4782f Patch (f4fb688c-4412-4426-b4b8-421ecf27b14a)
https://github.com/TYPO3/typo3/commit/722bf71c118b0a8e4f2c2494854437d846799a13 Patch (f4fb688c-4412-4426-b4b8-421ecf27b14a)
https://github.com/TYPO3/typo3/commit/e0f0ceee480c203fbb60b87454f5f193e541d27f Patch (f4fb688c-4412-4426-b4b8-421ecf27b14a)
https://typo3.org/security/advisory/typo3-core-sa-2026-004 Vendor Advisory (f4fb688c-4412-4426-b4b8-421ecf27b14a)