CVE-2026-33159
MEDIUMCraft CMS 4.x and 5.x - Unauthenticated Config Sync Operations
Title source: manualDescription
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.
References (4)
Core 4
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/craftcms/cms/security/advisories/GHSA-6mrr-q3pj-h53w
X_Refsource_Misc x_refsource_misc
https://github.com/craftcms/cms/commit/7f0ead833f7c2b91ae12003caad833479dd08592
X_Refsource_Misc x_refsource_misc
https://github.com/craftcms/cms/releases/tag/4.17.8
X_Refsource_Misc x_refsource_misc
https://github.com/craftcms/cms/releases/tag/5.9.14
Scores
CVSS v3
6.5
EPSS
0.0031
EPSS Percentile
22.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-306
CWE-862
Status
published
Products (6)
craftcms/cms
5.0.0-RC1 - 5.9.14Packagist
craftcms/cms
>= 4.0.0-RC1, < 4.17.8
craftcms/cms
>= 5.0.0-RC1, < 5.9.14
craftcms/craft_cms
4.0.0 (4 CPE variants)
craftcms/craft_cms
5.0.0 (2 CPE variants)
craftcms/craft_cms
4.0.0 - 4.17.8
Published
Mar 24, 2026
Tracked Since
Mar 24, 2026