Vulnerability · Published Apr 21, 2026 · Assigned by GitHub_M

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

Medium 5.5

In plain English

A medium-severity server-side request forgery in cms from craftcms. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)5.5Medium
Exploit odds (30 days)0.3%top 80.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

EcosystemPackageFixed inAdvisory
Packagistcraftcms/cms5.9.15GHSA-3m9m-24vh-39wx
Packagistcraftcms/cms4.17.9GHSA-3m9m-24vh-39wx

Affected products (as reported)

VendorProductVersions
craftcms cms >= 5.0.0-RC1, < 5.9.15>= 4.0.0-RC1, < 4.17.9

Weakness: CWE-918 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

References