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Authenticated SSRF via Upload Functionality

High
denolfe published GHSA-6r7f-q7f5-wpx8 Mar 30, 2026

Package

npm payload (npm)

Affected versions

< 3.79.1

Patched versions

3.79.1

Description

Impact

An authenticated Server-Side Request Forgery (SSRF) vulnerability existed in the upload functionality.

Authenticated users with create or update access to an upload-enabled collection could cause the server to make outbound HTTP requests to arbitrary URLs.

You are affected if ALL of these are true:

  • Payload version < v3.79.1
  • At least one collection with upload enabled
  • An authenticated user has create or update access to that collection

Patches

This vulnerability has been patched in v3.79.1.
Users should upgrade to v3.79.1 or later.

Workarounds

Until you can upgrade:

  • Restrict create and update access to upload-enabled collections to trusted roles only.
  • Limit outbound network access from your Payload server where possible.

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

CVE ID

CVE-2026-34746

Weaknesses

Server-Side Request Forgery (SSRF)

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. Learn more on MITRE.