What’s Vulnerable › Vulnerabilities

CVE-2026-105846: Payload: Untrusted redirect URL parameter exploit

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-06 · updated 2026-10-15
• Weakness: CWE-601

Description

Payload is a free and open source headless content management system. In versions from 3.40.0 before 3.88.0 and canary versions before 4.0.0-canary.27, an attacker can craft a redirect URL parameter that sends a guest user to an untrusted destination after the authentication flow completes. This issue is fixed in versions 3.88.0 and 4.0.0-canary.27.

Affected products

• payloadcms payload: from 3.40.0 before 3.88.0; 4.0.0-canary0, 4.0.0-canary1, 4.0.0-canary10, 4.0.0-canary11, 4.0.0-canary12, 4.0.0-canary13 (+21) — fixed in 3.88.0

How to fix

Upgrade to a fixed version: payloadcms payload 3.88.0. Check the vendor advisory for mitigations.

References

• https://github.com/payloadcms/payload/commit/a742140ab4fca3160f7f83e9e7d996552ffc3b5a
• https://github.com/payloadcms/payload/releases/tag/v3.88.0
• https://github.com/payloadcms/payload/security/advisories/GHSA-w84c-53h3-mc2g

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