https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-08T04:57:48.716597+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/euvd-2026-278791 EUVD-2026-278791 2026-10-08T04:57:48.762993+00:00 EUVD-2026-278791 https://cve.radiocsirt.org/vuln/fkie_cve-2026-34750 fkie_cve-2026-34750 2026-10-08T04:57:48.763030+00:00

Payload is a free and open source headless content management system. Prior to version 3.78.0 in @payloadcms/storage-azure, @payloadcms/storage-gcs, @payloadcms/storage-r2, and @payloadcms/storage-s3, the client-upload signed-URL endpoints for S3, GCS, Azure, and R2 did not properly sanitize filenames. An attacker could craft filenames to escape the intended storage location. This issue has been patched in version 3.78.0 for @payloadcms/storage-azure, @payloadcms/storage-gcs, @payloadcms/storage-r2, and @payloadcms/storage-s3.

 https://cve.radiocsirt.org/vuln/ghsa-frq9-7j6g-v74x GHSA-frq9-7j6g-v74x — Payload has Insufficient Filename Validation in Client-Upload Signed-URL Endpoints 2026-10-08T04:57:48.763072+00:00

Affected: npm: @payloadcms/storage-azure, npm: @payloadcms/storage-gcs, npm: @payloadcms/storage-r2, npm: @payloadcms/storage-s3

### Impact

The client-upload signed-URL endpoints for S3, GCS, Azure, and R2 did not properly sanitize filenames. An attacker could craft filenames to escape the intended storage location.

Consumers are affected if ALL of these are true:

- Payload version **< v3.78.0** - Using client-upload signed-URL endpoints for any supported storage adapter

## Patches

This vulnerability has been patched in **v3.78.0**. Filename validation has been hardened for client uploads.

Consumers should upgrade to **v3.78.0** or later.

## Workarounds

Consumers can upgrade:

- Limit access to client-upload signed-URL endpoints to trusted users only.