CVE-2026-41129: Craft CMS has Server-Side Request Forgery (SSRF) with Asset Uploads Mutations

Severity: medium (CVSS 5.5 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-22 · updated 2026-10-26
Weakness: CWE-918

Description

Craft CMS is a content management system (CMS). Versions on the 4.x branch through 4.17.8 and the 5.x branch through 5.9.14 are vulnerable to Server-Side Request Forgery. The exploitation requires a few permissions to be enabled in the used GraphQL schema: "Edit assets in the <VolumeName> volume" and "Create assets in the <VolumeName> volume." Versions 4.17.9 and 5.9.15 patch the issue.

Affected products

craftcms cms: from 5.0.0-RC1, < 5.9.15; from 4.0.0-RC1, < 4.17.9

References

https://github.com/craftcms/cms/commit/d20aecfaa0eae076c4154be3b17e1f9fa05ce46f
https://github.com/craftcms/cms/security/advisories/GHSA-3m9m-24vh-39wx

Get alerted when CVE-2026-41129 or the next vulnerability affects your stack