CVE-2026-105857 — Vulnerability in @payloadcms/plugin-form-builder...

CRITICAL

Payload Form Builder has an RCE issue

Published October 7, 2026Updated October 7, 2026Source: osv

Summary

## Impact A vulnerability in `@payloadcms/plugin-form-builder` in versions < 3.90.0 allow submissions which could be crafted to execute remote code on the server. **You are affected if:** - You are using `@payloadcms/plugin-form-builder` ## Patches Users should upgrade Payload packages to `>= 3.90.0` or `>= 4.0.0-canary.34`.

Advisory Timeline

First published October 7, 2026 (4 days ago).
Last revised October 7, 2026 — 0 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

npm

Update @payloadcms/plugin-form-builder to 4.0.0-canary.34 or later

npm install @payloadcms/plugin-form-builder@4.0.0-canary.34

npm

Update @payloadcms/plugin-form-builder to 3.90.0 or later

npm install @payloadcms/plugin-form-builder@3.90.0

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (2)

Affects 1 ecosystem: npm (1).

Package	Ecosystem	Affected	Fixed In
@payloadcms/plugin-form-builder	npm	All versions	4.0.0-canary.34
@payloadcms/plugin-form-builder	npm	All versions	3.90.0

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CWE-1321
Prototype PollutionMITRE
CWE-94
Code InjectionMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 10.0 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2026-105857?: Payload Form Builder has an RCE issue This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 10.0/10).
How do I check if my project is affected by CVE-2026-105857?: CVE-2026-105857 affects @payloadcms/plugin-form-builder. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-105857 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

10.0

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-r488-j9vj-wx3q

Related CVEs

CVE-2026-34751
CRITICAL
Payload: Pre-Authentication Account Takeover via Parameter Injection in Password Recovery
CVE-2026-105844
CRITICAL
Payload: Prototype pollution in Payload Import Export plugin
CVE-2026-108261
CRITICAL
TinaCMS admin preview iframe loads an attacker-controlled origin from the URL fragment
CVE-2026-25544
CRITICAL
@payloadcms/drizzle has SQL Injection in JSON/RichText Queries on PostgreSQL/SQLite Adapters
CVE-2026-105850
HIGH
Payload Ecommerce has an order confirmation validation issue
CVE-2026-34748
HIGH
@payloadcms/next has Stored XSS in Admin Panel
CVE-2026-105856
HIGH
Payload: SQL injection in SQLite/Postgres
CVE-2026-105848
MEDIUM
Payload: Insufficient Access Control in Stripe REST Proxy

Check if you're affected

Scan your dependencies to see if this vulnerability affects your projects.

Scan Your Dependencies