Vulnerability Intelligence Report
Payload: RCE in Payload Form Builder
CVE-2026-105857
Payload is a free and open source headless content management system. In @payloadcms/plugin-form-builder versions before 3.90.0 and canary versions before 4.0.0-canary.34, an attacker can craft a form submission that executes code remotely on the server. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.
No Active Exploit Signals
CVSS Base Score
10.0
CRITICAL
Exploitability:3.9
Impact Score:6.1
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
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SSVC Action
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Weaknesses (CWE)
CWE-94 ↗CWE-94: Improper Control of Generation of Code ('Code Injection')
CWE-1321 ↗CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| payloadcms | payload | < 3.90.0 (affected), >= 4.0.0-canary.0, < 4.0.0-canary.34 (affected) |
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | GitHub, Inc. · Vendor · USA |
| Reserved | 2026-10-05T23:06:29 |
| Published | 2026-10-06T16:26:54 |
| Last Updated | 2026-10-06T17:23:32 |
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