CVE-2026-0859

Summary

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 Software

VendorProductVersion RangeStatus
TYPO3TYPO3 CMS10.0.0 < 10.4.55affected
TYPO3TYPO3 CMS11.0.0 < 11.5.49affected
TYPO3TYPO3 CMS12.0.0 < 12.4.41affected
TYPO3TYPO3 CMS13.0.0 < 13.4.23affected
TYPO3TYPO3 CMS14.0.0 < 14.0.2affected

Weaknesses

  • CWE-502: CWE-502 Deserialization of Untrusted Data

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References