[ CVE-2026-105867 · Published 6 Oct 2026 ]
Payload: Client uploads could overwrite S3 objects
CVSS 6.5
EPSS <1%Fix available
[ Description ]Official description
Payload is a free and open source headless content management system. In @payloadcms/storage-s3 versions before 3.90.0 and canary versions before 4.0.0-canary.34, an authenticated user can overwrite an existing S3 object belonging to another upload collection when client uploads are enabled for multiple collections sharing a bucket and useCompositePrefixes is false or unset. This bypasses the target collection's access controls and prior file validation. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.
[ Fixes ]Fixes and patches
- @payloadcms/storage-s3 3.90.0Fixed version · GitHub Advisories · npm package @payloadcms/storage-s3: upgrade to 3.90.0 or later (affected < 3.90.0)
- @payloadcms/storage-s3 4.0.0-canary.34Fixed version · GitHub Advisories · npm package @payloadcms/storage-s3: upgrade to 4.0.0-canary.34 or later (affected >= 4.0.0-canary.0, < 4.0.0-canary.34)
- Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD
- Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD
[ Packages ]Affected open-source packages
- @payloadcms/storage-s3 npmAffected < 3.90.0 · fixed in 3.90.0 · GHSA-7vg8-29qx-jgj8
- @payloadcms/storage-s3 npmAffected >= 4.0.0-canary.0, < 4.0.0-canary.34 · fixed in 4.0.0-canary.34 · GHSA-7vg8-29qx-jgj8