CVE-2026-33159
March 24, 2026
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 Packages
https://github.com/craftcms/cms.git (GITHUB):
Affected version(s) >=5.9.0 <5.9.17Fix Suggestion:
Update to version 5.9.17https://github.com/craftcms/cms.git (GITHUB):
Affected version(s) >=4.17.0 <4.17.10Fix Suggestion:
Update to version 4.17.10https://github.com/craftcms/cms.git (GITHUB):
Affected version(s) >=5.9.0 <5.9.16Fix Suggestion:
Update to version 5.9.16https://github.com/craftcms/cms.git (GITHUB):
Affected version(s) >=4.17.0 <4.17.9Fix Suggestion:
Update to version 4.17.9https://github.com/craftcms/cms.git (GITHUB):
Affected version(s) >=5.9.0 <5.9.14Fix Suggestion:
Update to version 5.9.14https://github.com/craftcms/cms.git (GITHUB):
Affected version(s) >=5.9.0 <5.9.17Fix Suggestion:
Update to version 5.9.17https://github.com/craftcms/cms.git (GITHUB):
Affected version(s) >=5.9.0 <5.9.16Fix Suggestion:
Update to version 5.9.16https://github.com/craftcms/cms.git (GITHUB):
Affected version(s) >=5.9.0 <5.9.15Fix Suggestion:
Update to version 5.9.15https://github.com/craftcms/cms.git (GITHUB):
Affected version(s) >=5.9.0 <5.9.17Fix Suggestion:
Update to version 5.9.17https://github.com/craftcms/cms.git (GITHUB):
Affected version(s) >=@craftcms/sass@1.0.0 <4.17.8Fix Suggestion:
Update to version 4.17.8https://github.com/craftcms/cms.git (GITHUB):
Affected version(s) >=5.9.0 <5.9.16Fix Suggestion:
Update to version 5.9.16https://github.com/craftcms/cms.git (GITHUB):
Affected version(s) >=4.17.0 <4.17.11Fix Suggestion:
Update to version 4.17.11craftcms/cms (PHP):
Affected version(s) >=5.0.0-RC1 <5.9.14Fix Suggestion:
Update to version 5.9.14craftcms/cms (PHP):
Affected version(s) >=4.0.0-RC1 <4.17.8Fix Suggestion:
Update to version 4.17.8Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
EPSS
Base Score:
0.07
