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OpenAdvisories
Low · 2.7 CVE-2026-33160 EUVD-2026-14940GHSA-5pgf-h923-m958

Craft CMS: Anonymous "generate transform" calls for assets can expose private assets via transform URL

Published Mar 24, 2026 · Updated Mar 26, 2026 · Assigned by GitHub_M

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, an unauthenticated user can call assets/generate-transform with a private assetId, receive a valid transform URL, and fetch transformed image bytes. The endpoint is anonymous and does not enforce per-asset authorization before returning the transform URL. This issue has been patched in versions 4.17.8 and 5.9.14.

Affected products

VendorProductAffectedFixed
craftcms cms >= 4.0.0-RC1, < 4.17.8, >= 5.0.0-RC1, < 5.9.14 —

Affected packages

EcosystemPackageAffectedFixedRecord
Packagist craftcms/cms >= 5.0.0-RC1, < 5.9.14 5.9.14 GHSA-5pgf-h923-m958
Packagist craftcms/cms >= 4.0.0-RC1, < 4.17.8 4.17.8 GHSA-5pgf-h923-m958

References