Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Craftcms | Craft Cms | < 4.17.8 |
Related Weaknesses (CWE)
References
- https://github.com/craftcms/cms/commit/7f0ead833f7c2b91ae12003caad833479dd08592Patch
- https://github.com/craftcms/cms/releases/tag/4.17.8Release Notes
- https://github.com/craftcms/cms/releases/tag/5.9.14Release Notes
- https://github.com/craftcms/cms/security/advisories/GHSA-6mrr-q3pj-h53wVendor Advisory
FAQ
What is CVE-2026-33159?
CVE-2026-33159 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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, o...
How severe is CVE-2026-33159?
CVE-2026-33159 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-33159?
Check the references section above for vendor advisories and patch information. Affected products include: Craftcms Craft Cms.