CVE-2026-33159

Summary

Craft CMS is a content management system (CMS). From version 4.0.0-RC1 to before version 4.17.8 and from version 5.0.0-RC1 to before version 5.9.14, guest users can access Config Sync updater index, obtain signed data, and execute state-changing Config Sync actions (regenerate-yaml, apply-yaml-changes) without authentication. This issue has been patched in versions 4.17.8 and 5.9.14.

Affected Software

VendorProductVersion RangeStatus
craftcmscms>= 4.0.0-RC1, < 4.17.8affected
craftcmscms>= 5.0.0-RC1, < 5.9.14affected

Weaknesses

  • CWE-306: CWE-306: Missing Authentication for Critical Function
  • CWE-862: CWE-862: Missing Authorization

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: poc
    • Automatable: yes
    • Technical Impact: partial

References