CVE-2026-105851

CRITICAL CVSS 4.0: 9.3 EPSS 0.25%
Updated Oct 15, 2026
Payload
Parameter Value
CVSS 9.3 (CRITICAL)
Affected Versions 3.0.0 — 3.90.0
Fixed In 3.90.0
Type CWE-863 (Incorrect Authorization), CWE-284 (Improper Access Control)
Vendor Payload
Public PoC No

Payload is a free and open source headless content management system. In versions from 3.0.0 before 3.90.0 and canary versions before 4.0.0-canary.34, the duplicate operation copies values from a source document even when a field is hidden or its access.read or access.create rule rejects that value for the caller. The disableDuplicate setting does not prevent this access-control bypass.

This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
High
Complete data modification
Availability
None
No disruption

CVSS Vector v4.0

Vulnerable Products 35

Configuration From (including) Up to (excluding)
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:*:*:*:*:*:node.js:*:*
3.0.0 3.90.0
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary0:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary1:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary10:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary11:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary12:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary13:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary14:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary15:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary16:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary17:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary18:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary19:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary2:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary20:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary21:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary22:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary23:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary24:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary25:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary26:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary27:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary28:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary29:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary3:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary30:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary31:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary32:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary33:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary4:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary5:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary6:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary7:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary8:*:*:*:node.js:*:*
— —
Payloadcms Payload
cpe:2.3:a:payloadcms:payload:4.0.0:canary9:*:*:*:node.js:*:*
— —