CVE-2026-105846

Payload: Untrusted redirect URL parameter exploit

State: Published
Severity: 6.1 Medium
Published: Oct 6, 2026
Updated: Oct 6, 2026
Reserved: Oct 5, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	6.1 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N	GitHub_M

Weaknesses

CWE-601 URL Redirection to Untrusted Site ('Open Redirect')

Affected Products

Product	Versions
payloadpayloadcms	>= 3.40.0, < 3.88.0Affected >= 4.0.0-canary.0, < 4.0.0-canary.27Affected
next@payloadcms	>= 3.31.0, < 3.88.0Affected >= 4.0.0-canary.0, < 4.0.0-canary.27Affected

References

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