Medium 6.9Published Mar 24, 2026

CVE-2026-33159Craft CMS: Unauthenticated users could execute project configuration sync operations that should be restricted trusted users

Updated under an hour ago (Oct 26, 2026, 1:00 PM ET)

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It affects craftcms cms and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for craftcms cms

Exploited in the last 30 days

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: 6.9 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Weakness (CWE): CWE-306, CWE-862
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Mar 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

craftcms cms craftcms:cms (from the name)	from 4.0.0-RC1, < 4.17.8; from 5.0.0-RC1, < 5.9.14	CNA record
craftcms craft_cms craftcms:craft_cms	after 4.0.0 before 4.17.8; after 5.0.0 before 5.9.14; 4.0.0; 4.0.0; 4.0.0; 4.0.0; 5.0.0; 5.0.0	NVD

References

References

https://github.com/craftcms/cms/security/advisories/GHSA-6mrr-q3pj-h53w	x-refsource-confirm, vendor-advisory
https://github.com/craftcms/cms/commit/7f0ead833f7c2b91ae12003caad833479dd08592	x-refsource-misc, patch
https://github.com/craftcms/cms/releases/tag/4.17.8	x-refsource-misc, release-notes
https://github.com/craftcms/cms/releases/tag/5.9.14	x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.