Vulnerability · Published Oct 6, 2026 · Assigned by GitHub_M

CVE-2026-105857Payload: RCE in Payload Form Builder

Critical 10.0

In plain English

A critical-severity code injection in payload from payloadcms. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)10.0Critical

Exploit odds (30 days)0.4%top 62.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	@payloadcms/plugin-form-builder	3.90.0	GHSA-r488-j9vj-wx3q
npm	@payloadcms/plugin-form-builder	4.0.0-canary.34	GHSA-r488-j9vj-wx3q

Affected products (as reported)

Vendor	Product	Versions
payloadcms	payload	< 3.90.0>= 4.0.0-canary.0, < 4.0.0-canary.34

Weakness: CWE-94, CWE-1321 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

References

https://github.com/payloadcms/payload/security/advisories/GHSA-r488-j9vj-wx3q x_refsource_CONFIRM
https://github.com/payloadcms/payload/commit/333b82b9f3e685fed6826c2e3270da79df8336c6 x_refsource_MISC
https://github.com/payloadcms/payload/releases/tag/v3.90.0 x_refsource_MISC