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CVE-2026-34746: Payload has Authenticated SSRF via Upload Functionality

• Severity: high (CVSS 7.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-01 · updated 2026-10-26
• Weakness: CWE-918

Description

Payload is a free and open source headless content management system. Prior to version 3.79.1, an authenticated Server-Side Request Forgery (SSRF) vulnerability exists 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. This issue has been patched in version 3.79.1.

Affected products

• payloadcms payload: before 3.79.1 — fixed in 3.79.1

How to fix

Upgrade to a fixed version: payloadcms payload 3.79.1. Check the vendor advisory for mitigations.

References

• https://github.com/payloadcms/payload/releases/tag/v3.79.1
• https://github.com/payloadcms/payload/security/advisories/GHSA-6r7f-q7f5-wpx8

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