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CVE PROGRAM SOURCE RECORD5.2 Medium

CVE-2026-0859

TYPO3 CMS Allows Insecure Deserialization via Mailer File Spool

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Status
Published
Published
Updated
Assigning organization
TYPO3

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

TYPO3 TYPO3 CMS

Default version status: unaffected

  • 10.0.0 to < 10.4.55affected
  • 11.0.0 to < 11.5.49affected
  • 12.0.0 to < 12.4.41affected
  • 13.0.0 to < 13.4.23affected
  • 14.0.0 to < 14.0.2affected

References