Cross-site Scripting (XSS)

Overview @payloadcms/storage-s3 is a Payload storage adapter for Amazon S3 Affected versions of this package are vulnerable to Cross-site Scripting XSS via insufficient validation of upload file identity and XML/SVG content delivery in the uploads pipeline. An authenticated attacker can upload a...

EUVD-2026-93513

Payload: Client uploads could overwrite S3 objects...

@ainsleydev/payload-helper (0.0.16), @contentql/core (>=0.1.2, <=0.3.5) +5 more potentially affected by CVE-2026-105868 via @payloadcms/storage-s3 (>=3.0.0-beta.29, <=3.89.0)

@payloadcms/storage-s3 NPM version =3.0.0-beta.29, =0.1.2, =0.0.1, =0.1.0, =0.1.0, =0.1.4, =0.1.5 Source cves: CVE-2026-105868 Source advisory: SNYK:JS-PAYLOADCMSSTORAGES3-20570543...

Arbitrary File Upload

Overview @payloadcms/storage-s3 is a Payload storage adapter for Amazon S3 Affected versions of this package are vulnerable to Arbitrary File Upload via insufficient validation of upload identity and MIME type in the upload handling pipeline, specifically in generateFileData and related file-type...

Authorization Bypass Through User-Controlled Key

Overview @payloadcms/storage-s3 is a Payload storage adapter for Amazon S3 Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key via the S3 client-side direct upload flow in S3ClientUploadHandler.ts, where signed PUT URLs are generated without an...

CVE-2026-105867

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...

CVE-2026-105867

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...

CVE-2026-105867 Payload: Client uploads could overwrite S3 objects

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...

CVE-2026-105867

The Payload headless content management system contains a vulnerability in the @payloadcms/storage-s3 component (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 a different upload collection if multiple co...

CVE-2026-105867 Payload: Client uploads could overwrite S3 objects

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...

CVE-2026-105867 Payload: Client uploads could overwrite S3 objects

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...

CVE-2026-105867: Authorization Bypass Through User-Controlled Key

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...

PT-2026-106800

Name of the Vulnerable Software and Affected Versions @payloadcms/storage-s3 versions prior to 3.90.0 @payloadcms/storage-s3 canary versions prior to 4.0.0-canary.34 Description An authenticated user can overwrite an existing S3 object belonging to another upload collection. This occurs when clie...

CVE-2026-34750

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...

CVE-2026-34750: Improper Limitation of a Pathname to a Restricted Directory

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...