CVE-2026-105857
Critical
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.
SeverityCritical
CVSS10.0
Exploit probability—
ProductPayload
PublishedOct 6, 2026
First seenOct 6, 2026
Weakness typeCWE-94Code injectionCWE-1321Prototype pollution
How to fix
Update
- payloadcms payload3.90.0 or later
- @payloadcms/plugin-form-builder3.90.0, 4.0.0-canary.34 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| payloadcms payload | v < 3.90.0, 4.0.0 | 3.90.0 |
| @payloadcms/plugin-form-buildernpm | v < 3.90.0, 4.0.0-canary.0 ≤ v < 4.0.0-canary.34 | 3.90.0, 4.0.0-canary.34 |
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