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Medium

Payload: Server-Side Request Forgery (SSRF) in External File URL Uploads

  • Disclosed: 24.02.2026
  • Updated: 11.10.2026 10:22

Impact

A Server-Side Request Forgery (SSRF) vulnerability exists in Payload's external file upload functionality. When processing external URLs for file uploads, insufficient validation of HTTP redirects could allow an authenticated attacker to access internal network resources.

Users are affected if ALL of these are true:

  • Payload version < v3.75.0
  • At least one collection with upload enabled
  • A user has create access to that upload-enabled collection

An authenticated user with upload collection write permissions could potentially access internal services. Response content from internal services could be retrieved through the application.

Patches

This vulnerability has been patched in v3.75.0. Users should upgrade to v3.75.0 or later.

Workarounds

If users cannot upgrade immediately, they can mitigate this vulnerability by disabling external file uploads via the disableExternalFile upload collection option, or by restricting create access on upload-enabled collections to trusted users only.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
npm package payload < 3.75.0 3.75.0

References

CVSS score 6.5/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Weakness (CWE)
CWE-918
Platform
npm
Package
payload
Disclosed
24.02.2026
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-hhfx-5x8j-f5f6 - CC BY 4.0

Vulnerability history: payload

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (29) in the archive
Total entries
29
First → latest
04.2022 10.2026
Without a fix
1
Exploited in attacks
0

Severity breakdown

  • Critical 5
  • High 13
  • Medium 11

Disclosures per year

Severity:
  1. Payload: Remote Code Execution through first-register
    High · 8.1 CVE-2026-105858 < 3.90.0, >= 4.0.0-canary.0, < 4.0.0-canary.34 3.90.0, 4.0.0-canary.34
  2. Payload external upload trust validation issue
    High CVE-2026-105861 >= 3.0.0, < 3.90.0, >= 4.0.0-canary.0, < 4.0.0-canary.34 3.90.0, 4.0.0-canary.34
  3. Payload: Bypassed sanitization of user uploaded SVGs
    High · 8.7 CVE-2026-105862 < 3.90.0, >= 4.0.0-canary.0, < 4.0.0-canary.34 3.90.0, 4.0.0-canary.34
  4. Payload: Incomplete validation during the upload file lifecycle
    High · 8.1 CVE-2026-105865 < 3.90.0, >= 4.0.0-canary.0, < 4.0.0-canary.34 3.90.0, 4.0.0-canary.34
  5. Payload: Uploaded XML files could execute same-origin JavaScript
    High CVE-2026-105868 < 3.90.0, >= 4.0.0-canary.0, < 4.0.0-canary.34 3.90.0, 4.0.0-canary.34
  6. Payload: Unauthorized update to collection documents
    Critical · 9.8 CVE-2026-105859 < 3.90.0, >= 4.0.0-canary.0, < 4.0.0-canary.34 3.90.0, 4.0.0-canary.34
  7. Payload authentication token field handling issue
    Critical CVE-2026-105863 >= 3.0.0, < 3.90.0, >= 4.0.0-canary.0, < 4.0.0-canary.34 3.90.0, 4.0.0-canary.34
  8. Payload didn't enforce field-level password update restrictions
    High CVE-2026-105855 < 3.90.0, >= 4.0.0-canary.0, < 4.0.0-canary.34 3.90.0, 4.0.0-canary.34
  9. Payload: ReDoS in Multipart Content-Type Validation
    High CVE-2026-105854 >= 3.0.0, < 3.90.0, >= 4.0.0-canary.0, < 4.0.0-canary.34 3.90.0, 4.0.0-canary.34
  10. Payload vulnerable to API key disclosure through ordinary document reads
    High CVE-2026-105849 >= 3.0.0, < 3.90.0, >= 4.0.0-canary.0, < 4.0.0-canary.34 3.90.0, 4.0.0-canary.34
  11. Payload: Token refresh and password reset responses may expose restricted user fields
    High CVE-2026-105853 >= 3.0.0, < 3.90.0, >= 4.0.0-canary.0, < 4.0.0-canary.34 3.90.0, 4.0.0-canary.34
  12. Payload: SQL Injection in SQLite and Postgres
    Critical · 9.8 CVE-2026-105845 >= 3.0.0, < 3.88.0, >= 4.0.0-canary.0, < 4.0.0-canary.27 3.88.0, 4.0.0-canary.27
  13. Payload: Polymorphic join queries could disclose hidden fields
    High CVE-2026-105847 >= 3.0.0, < 3.90.0, >= 4.0.0-canary.0, < 4.0.0-canary.34 3.90.0, 4.0.0-canary.34
  14. Payload has Authenticated SSRF via Upload Functionality
    High · 7.7 CVE-2026-34746 < 3.79.1 3.79.1
  15. Payload has an SQL Injection via Query Handling
    High · 8.5 CVE-2026-34747 < 3.79.1 3.79.1
  16. Payload: Pre-Authentication Account Takeover via Parameter Injection in Password Recovery
    Critical · 9.1 CVE-2026-34751 < 3.79.1 3.79.1
  17. Payload: Server-Side Request Forgery (SSRF) in External File URL Uploads this entry
    Medium · 6.5 CVE-2026-27567 < 3.75.0 3.75.0
  18. Hidden fields can be leaked on readable collections in Payload
    High · 7.4 CVE-2023-30843 < 1.7.0 1.7.0
  19. Unrestricted Upload of File with Dangerous Type in Payload
    Critical · 9.8 CVE-2022-27952 < 0.15.1 0.15.1

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