CVE-2026-118685

CVSS 6.9 (medium) · published 2026-10-28

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.

Weakness: CWE-863

Source: NVD CVE-2026-118685

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
• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-gg3p-r4g8-vxg2

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