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.
Metrics
Affected Vendors & Products
References
History
Thu, 02 Apr 2026 20:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Payloadcms
Payloadcms payload |
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| Vendors & Products |
Payloadcms
Payloadcms payload |
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| Metrics |
ssvc
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Wed, 01 Apr 2026 23:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Payload has Insufficient Filename Validation in Client-Upload Signed-URL Endpoints | |
| Weaknesses | CWE-22 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-04-01T19:51:59.689Z
Updated: 2026-04-02T15:33:58.886Z
Reserved: 2026-03-30T19:17:10.225Z
Link: CVE-2026-34750
Updated: 2026-04-02T15:33:32.561Z
Status : Undergoing Analysis
Published: 2026-04-01T20:16:27.337
Modified: 2026-04-03T16:10:52.680
Link: CVE-2026-34750
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