Payload CMS up to 3.87.x/4.0.0-canary.26 Authentication Flow redirect

Summaryinfo

A vulnerability was found in Payload CMS Payload up to 3.87.x/4.0.0-canary.26. It has been classified as problematic. This impacts an unknown function of the component Authentication Flow. The manipulation of the argument redirect leads to redirect. This vulnerability is referenced as CVE-2026-105846. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Payload CMS Payload up to 3.87.x/4.0.0-canary.26. This issue affects an unknown code block of the component Authentication Flow. The manipulation of the argument redirect with an unknown input leads to a redirect vulnerability. Using CWE to declare the problem leads to CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. Impacted is integrity. The summary by CVE is:

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.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-105846 since 10/06/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1204.001 according to MITRE ATT&CK.

Upgrading to version 3.88.0 or 4.0.0-canary.27 eliminates this vulnerability.

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Productinfo

Type

• Content Management System

Vendor

• Payload CMS

Name

• Payload

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5
• 3.6
• 3.7
• 3.8
• 3.9
• 3.10
• 3.11
• 3.12
• 3.13
• 3.14
• 3.15
• 3.16
• 3.17
• 3.18
• 3.19
• 3.20
• 3.21
• 3.22
• 3.23
• 3.24
• 3.25
• 3.26
• 3.27
• 3.28
• 3.29
• 3.30
• 3.31
• 3.32
• 3.33
• 3.34
• 3.35
• 3.36
• 3.37
• 3.38
• 3.39
• 3.40
• 3.41
• 3.42
• 3.43
• 3.44
• 3.45
• 3.46
• 3.47
• 3.48
• 3.49
• 3.50
• 3.51
• 3.52
• 3.53
• 3.54
• 3.55
• 3.56
• 3.57
• 3.58
• 3.59
• 3.60
• 3.61
• 3.62
• 3.63
• 3.64
• 3.65
• 3.66
• 3.67
• 3.68
• 3.69
• 3.70
• 3.71
• 3.72
• 3.73
• 3.74
• 3.75
• 3.76
• 3.77
• 3.78
• 3.79
• 3.80
• 3.81
• 3.82
• 3.83
• 3.84
• 3.85
• 3.86
• 3.87
• 4.0.0-canary.0
• 4.0.0-canary.1
• 4.0.0-canary.2
• 4.0.0-canary.3
• 4.0.0-canary.4
• 4.0.0-canary.5
• 4.0.0-canary.6
• 4.0.0-canary.7
• 4.0.0-canary.8
• 4.0.0-canary.9
• 4.0.0-canary.10
• 4.0.0-canary.11
• 4.0.0-canary.12
• 4.0.0-canary.13
• 4.0.0-canary.14
• 4.0.0-canary.15
• 4.0.0-canary.16
• 4.0.0-canary.17
• 4.0.0-canary.18
• 4.0.0-canary.19
• 4.0.0-canary.20
• 4.0.0-canary.21
• 4.0.0-canary.22
• 4.0.0-canary.23
• 4.0.0-canary.24
• 4.0.0-canary.25
• 4.0.0-canary.26

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