Vulnerability · Published Jun 25, 2026 · Assigned by GitHub_M
CVE-2026-55411ToolJet: Cross-tenant credential decryption (IDOR) in POST /api/data-sources/decrypt — any authenticated user can decrypt any organization's data-source secrets
Medium 6.8
In plain English
A medium-severity authorization bypass via user-controlled key in ToolJet from ToolJet. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities).
Official description
ToolJet is the open-source foundation am AI-native platform for building and deploying internal tools, workflows and AI agents. Prior to 3.20.1780-lts, the authenticated endpoint POST /api/data-sources/decrypt returns the decrypted plaintext for any credential whose credential_id is supplied in the request body. Unlike every neighbouring data-source route, this handler is not protected by ValidateDataSourceGuard, does not receive the calling @User(), and the underlying CredentialsService.getValue() looks the credential up by id only, with no organization scoping. As a result, any authenticated user of any organization can decrypt the data-source secrets of any other organization by supplying that organization's credential_id — a cross-tenant confidentiality breach. This vulnerability is fixed in 3.20.1780-lts.
Affected products (as reported)
Weakness: CWE-639, CWE-863 · Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
References
- https://github.com/ToolJet/ToolJet/security/advisories/GHSA-x7qj-hfg8-p4cw x_refsource_CONFIRM