Vulnerability Report

CVE-2026-34750

Title: Path Traversal via Unsanitized Filenames in Storage Modules

Arbitrary File Access

Proof Of Concept

No public PoC currently indexed for CVE-2026-34750.

CWE Category CWE-22

Published Date Apr 01, 2026

Modified Date Apr 13, 2026

Exploit Status Not Found

Score 6.5 CVSS v3.1

Exploit Probability (EPSS)

0.41%

Vulnerability Summary

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 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.

Impacted Vendors

payloadcms 1

Reference Links

https://github.com/payloadcms/payload/security/advisories/GHSA-frq9-7j6g-v74x

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

6.5

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-34750 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

April 13, 2026 MODIFIED

Vulnerability data updated via NVD.

April 13, 2026 MODIFIED

Vulnerability data updated via NVD.

April 03, 2026 MODIFIED

Vulnerability data updated via NVD.

April 01, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


                                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Affected Stack

No specific products linked.