---
id: "CVE-2026-118685"
kind: "vulnerability"
aliases: ["CVE-2026-118685"]
title: "ToolJet: signup guard ignores disabled setting, letting anyone create accounts"
severity: "medium"
cvss: 6.9
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["internet-facing", "low-code", "runtime", "self-hosted"]
not_affected_if: ["auth-required", "managed-hosting", "network-restricted"]
published_at: "2026-10-28T19:17:35+00:00"
first_seen_at: "2026-10-28T19:34:55+00:00"
updated_at: "2026-10-28T19:36:08+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-118685", "first_seen_at": "2026-10-28T19:34:55+00:00"}]
---

# ToolJet: signup guard ignores disabled setting, letting anyone create accounts

ToolJet's SignupDisableGuard treats the string setting 'false' as truthy, so instance-level signup restrictions are not enforced. An unauthenticated attacker can POST to /api/signup without an organizationId to create an account, join the default workspace and receive a valid session.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the ToolJet version: `3.20.2-lts` up to but not including `3.20.242-lts` is affected.
- Review the instance signup setting and confirm whether signup is disabled.
- Look for unexpected new accounts in the default workspace.

## Fix

- Upgrade ToolJet to `3.20.242-lts` or later.
- Until upgraded, block external access to POST /api/signup at the reverse proxy.

## Timeline

- 2026-10-28T19:34:55+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-118685

## From the sources

ToolJet from 3.20.2-lts before 3.20.242-lts contains an authorization bypass in SignupDisableGuard, which treats the string signup setting 'false' as truthy, so instance-level signup restrictions are not enforced. Unauthenticated attackers can send POST requests to /api/signup without an organizationId to create an account, join the default workspace, and receive a valid session.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_