EUVD-2026-39470Severity by source
AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
AV:N chosen over AV:A because ToolJet's API is typically internet-exposed; PR:L confirmed by authentication requirement; S:C reflects cross-tenant boundary violation.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
Cross-tenant credential decryption in ToolJet prior to 3.20.1780-lts allows any authenticated user to retrieve plaintext data-source secrets belonging to any other organization on the same instance. The POST /api/data-sources/decrypt endpoint omits the ValidateDataSourceGuard present on all neighboring routes and performs no organization-scoped lookup, meaning a valid session from any tenant is sufficient to exfiltrate database passwords, API keys, and other stored secrets across tenant boundaries. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid ToolJet authentication token for any account on the affected instance (PR:L per CVSS) - no elevated role or admin access is needed. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The NVD CVSS 6.8 vector (AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N) reflects the core risk well but the AV:A designation may understate exposure: ToolJet deployments that publish the API over the internet would reduce the adjacency barrier to none. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with a low-privileged ToolJet account on a shared instance - potentially a free-tier or guest user in their own organization - discovers or is provided a credential_id associated with another tenant's data source (e.g., through insider knowledge, enumeration of sequential IDs, or a separate information disclosure). They issue a single authenticated POST /api/data-sources/decrypt request with that credential_id and receive the full plaintext secret in the response, which they can then use to directly access the victim organization's database or third-party API. … |
| Remediation | Upgrade ToolJet to version 3.20.1780-lts or later, which is the vendor-released patch that adds ValidateDataSourceGuard and correct organization-scoped authorization to the POST /api/data-sources/decrypt endpoint. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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