CVE-2026-105857: CWE-94: Improper Control of Generation of Code ('Code Injection') in payloadcms payload
Description
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.
CVSS v3.1
Score 10.0critical
Affected software
payloadcms
payload
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-105857 is a critical code injection vulnerability (CWE-94) in the @payloadcms/plugin-form-builder component of PayloadCMS. Versions prior to 3.90.0 and canary versions from 4.0.0-canary.0 up to but not including 4.0.0-canary.34 are affected. An attacker can exploit this by submitting a specially crafted form that results in remote code execution on the server hosting the CMS. This vulnerability has a CVSS 3.1 base score of 10.0, indicating it is exploitable remotely without privileges or user interaction, and results in complete confidentiality, integrity, and availability compromise. The issue is resolved in versions 3.90.0 and 4.0.0-canary.34.
Potential Impact
Successful exploitation allows an unauthenticated attacker to execute arbitrary code remotely on the server running the vulnerable PayloadCMS plugin. This leads to full system compromise including data confidentiality, integrity, and availability loss.
Mitigation Recommendations
Upgrade to @payloadcms/plugin-form-builder version 3.90.0 or later, or 4.0.0-canary.34 or later. These versions contain the official fix for this vulnerability. No other mitigations are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-10-05T23:06:29.748Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ac526892cdf04f656c62a37
Added to database: 10/06/2026, 16:49:13 UTC
Last enriched: 10/06/2026, 17:03:34 UTC
Last updated: 10/06/2026, 18:57:27 UTC
Views: 12
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