EUVD-2026-38367Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-accessible endpoint requires only a valid API key (PR:L); low confidentiality impact as only unprotected chatflow metadata is read-only disclosed; no integrity or availability impact applies.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3DescriptionCVE.org
Flowise before 3.1.2 contains an information disclosure vulnerability in the /api/v1/chatflows/apikey/:apikey endpoint. When the keyonly query parameter is omitted (the default), the endpoint returns not only the chatflows bound to the supplied API key but also all chatflows across every workspace that have no API key assigned, because the underlying query lacks any workspace filter. An attacker with a valid API key for one workspace can therefore retrieve the full ChatFlow configuration (including flowData with system prompts and node configurations, chatbotConfig, apiConfig, and credential IDs) of unprotected chatflows belonging to other workspaces.
AnalysisAI
Cross-workspace chatflow configuration disclosure in Flowise before 3.1.2 allows any holder of a valid API key for one workspace to read the full configuration of unprotected chatflows belonging to all other workspaces in the same instance. The /api/v1/chatflows/apikey/:apikey endpoint's database query omits a workspace scope filter when the keyonly parameter is absent (the default), causing it to return every chatflow system-wide where apikeyid is NULL or empty - including flowData, system prompts, chatbotConfig, apiConfig, and credential IDs from unrelated tenants. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to possess a valid Flowise API key for any workspace within the target Flowise instance (PR:L per the CVSS 4.0 vector). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N, score 5.3) accurately reflects a network-reachable flaw requiring only low-privilege access (a valid API key) with no attack complexity or special conditions beyond default endpoint behavior. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who holds a valid Flowise API key for Workspace A sends a standard GET request to `/api/v1/chatflows/apikey/<their_key>` - the default call pattern, omitting `keyonly` - and receives a full JSON array of chatflow objects from every other workspace in the instance whose chatflows have no API key assigned. The attacker parses the response to extract `flowData` (containing system prompt architecture), `chatbotConfig`, and `credentialIds`, gaining visibility into the AI configurations and potentially external integration credentials of competing tenants. … |
| Remediation | Upgrade Flowise to version 3.1.2 or later; this is the vendor-released patch confirmed by GHSA-c2c9-mfw7-p8hw and the npm package metadata. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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