CVE-2026-33159 | THREATINT

Description

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.

PUBLISHED Reserved 2026-03-17 | Published 2026-03-24 | Updated 2026-03-24 | Assigner GitHub_M

MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-306: Missing Authentication for Critical Function

CWE-862: Missing Authorization

Product status

>= 4.0.0-RC1, < 4.17.8

affected

>= 5.0.0-RC1, < 5.9.14

affected

References

github.com/...ms/cms/security/advisories/GHSA-6mrr-q3pj-h53w

github.com/...ommit/7f0ead833f7c2b91ae12003caad833479dd08592

github.com/craftcms/cms/releases/tag/4.17.8

github.com/craftcms/cms/releases/tag/5.9.14

cve.org (CVE-2026-33159)

nvd.nist.gov (CVE-2026-33159)

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