CVE-2026-33159

6.9 MEDIUM 0.4% exploit odds Fix listed Auth & access Web app

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 0.4% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2026-03-24 18:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 10:37 UTC Last updatedMost recent change to the record

Details

Published: 2026-03-24 18:16 UTC
Last modified: 2026-06-17 10:37 UTC
Exploit probability: 0.4% · EPSS, next 30 days
Weakness: CWE-306 · Missing authentication
Record status: Analyzed

Affected

Craftcms Craft Cms < 4.17.8
Craftcms Craft Cms < 5.9.14
Craftcms Craft Cms 4.0.0
Craftcms Craft Cms 5.0.0

Attack profile CVSS 4.0 · 6.9

Attack vector: Network
Complexity: Low
Attack requirements: None
Privileges needed: None
User interaction: None
Confidentiality: Low
Integrity: Low
Availability: None

Raw vector

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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Fix and advisories

References

NVD record · CVE.org record