Vulnerability-Lookup

CVE-2026-56268 (GCVE-0-2026-56268)

Vulnerability from cvelistv5 – Published: 2026-06-22 21:04 – Updated: 2026-06-23 15:06

Title

Flowise - Cross-Workspace Information Disclosure via chatflows/apikey Endpoint

Summary

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.

Severity

5.3 (Medium)


                        
                          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

7.7 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-863 - Incorrect Authorization

Assigner

VulnCheck

References

2 references

URL	Tags
https://github.com/FlowiseAI/Flowise/security/adv…	vendor-advisory
https://www.vulncheck.com/advisories/flowise-cros…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Flowise	Flowise	Affected: 0 , < 3.1.2 (semver) Unaffected: 3.1.2 (semver)

Date Public

2026-05-14 00:00

Credits

offset

Show details on NVD website

JSON

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GHSA-C2C9-MFW7-P8HW

Vulnerability from github – Published: 2026-05-20 15:45 – Updated: 2026-06-22 22:21

Summary

Flowise: Cross-Workspace Chatflow Disclosure via chatflows/apikey Endpoint Returns All Unprotected Chatflows

Details

Summary

The /api/v1/chatflows/apikey/:apikey endpoint (whitelisted, accessible with API key auth only) returns all chatflows bound to the provided API key AND all chatflows across the entire system that have no API key assigned. This crosses workspace boundaries, allowing a user in Workspace A who has a valid API key to read the full configuration (including flowData, chatbotConfig, system prompts, and node configurations) of chatflows from Workspace B, Workspace C, and all other workspaces, as long as those chatflows have no API key assigned.

Details

The controller at packages/server/src/controllers/chatflows/index.ts:90-107 validates the API key and calls the service:

const getChatflowByApiKey = async (req: Request, res: Response, next: NextFunction) => {
    try {
        const apikey = await apiKeyService.getApiKey(req.params.apikey)
        if (\!apikey) {
            return res.status(401).send("Unauthorized")
        }
        const apiResponse = await chatflowsService.getChatflowByApiKey(apikey.id, req.query.keyonly)
        return res.json(apiResponse)  // Returns full chatflow objects with flowData
    } catch (error) {
        next(error)
    }
}

The service at packages/server/src/services/chatflows/index.ts:223-245 builds the database query:

const getChatflowByApiKey = async (apiKeyId: string, keyonly?: unknown): Promise<any> => {
    const appServer = getRunningExpressApp()
    let query = appServer.AppDataSource.getRepository(ChatFlow)
        .createQueryBuilder("cf")
        .where("cf.apikeyid = :apikeyid", { apikeyid: apiKeyId })
    if (keyonly === undefined) {
        // When keyonly is not set (default), also return ALL chatflows with no API key
        query = query.orWhere("cf.apikeyid IS NULL").orWhere("cf.apikeyid = ''")
    }
    const dbResponse = await query.orderBy("cf.name", "ASC").getMany()
    return dbResponse  // Returns full ChatFlow entities including flowData
}

When keyonly is not provided as a query parameter (which is the default case), the query expands to include: - All chatflows bound to the provided API key (same workspace, expected behavior) - ALL chatflows with apikeyid IS NULL (any workspace, no workspace filter) - ALL chatflows with empty apikeyid (any workspace, no workspace filter)

There is NO workspaceId filter in this query. The response includes the full ChatFlow entity, which contains: - flowData - the complete workflow graph including system prompts, model names, internal URLs, custom code - chatbotConfig - chatbot configuration including allowed origins - apiConfig - API configuration and override settings - textToSpeech / speechToText - TTS/STT configuration including credential IDs - analytic - analytics configuration

PoC

# Step 1: Attacker has a valid API key for Workspace A
API_KEY="<attacker-workspace-a-api-key>"

# Step 2: Query the chatflows/apikey endpoint WITHOUT keyonly parameter
# Returns the attacker chatflows PLUS all chatflows without API keys from ALL workspaces
curl -s "http://localhost:3000/api/v1/chatflows/apikey/" | jq ".[].workspaceId"

# Step 3: With keyonly parameter, only chatflows bound to the API key are returned
curl -s "http://localhost:3000/api/v1/chatflows/apikey/?keyonly=true" | jq ".[].workspaceId"

Impact

Cross-Workspace Information Disclosure: A user in any workspace can read the full configuration of chatflows from all other workspaces that do not have an API key assigned. This breaks workspace isolation.
Intellectual Property Exposure: System prompts, custom function code, and workflow architecture of chatflows from other workspaces/organizations are exposed.
Credential Reference Leakage: The textToSpeech and speechToText fields include credential IDs, which can be abused via the TTS generate endpoint.
Amplified by Default: Most chatflows are created without an API key assigned (API keys are opt-in), so the majority of chatflows in a multi-workspace deployment are affected.

Recommended Fix

Add workspace scoping to the getChatflowByApiKey query by passing the API key workspace ID and filtering the OR clause:

// packages/server/src/services/chatflows/index.ts
const getChatflowByApiKey = async (apiKeyId: string, keyonly?: unknown, workspaceId?: string): Promise<any> => {
    const appServer = getRunningExpressApp()
    let query = appServer.AppDataSource.getRepository(ChatFlow)
        .createQueryBuilder("cf")
        .where("cf.apikeyid = :apikeyid", { apikeyid: apiKeyId })
    if (keyonly === undefined && workspaceId) {
        // Only include unprotected chatflows from the SAME workspace
        query = query.orWhere(
            "(cf.apikeyid IS NULL OR cf.apikeyid = :empty) AND cf.workspaceId = :workspaceId",
            { empty: "", workspaceId }
        )
    }
    const dbResponse = await query.orderBy("cf.name", "ASC").getMany()
    return dbResponse
}

Severity

5.3 (Medium)


                  
                    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

Show details on source website

JSON

To clipboard

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  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 3.1.1"
      },
      "package": {
        "ecosystem": "npm",
        "name": "flowise"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.1.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-56268"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-20T15:45:19Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "## Summary\n\nThe `/api/v1/chatflows/apikey/:apikey` endpoint (whitelisted, accessible with API key auth only) returns all chatflows bound to the provided API key AND all chatflows across the entire system that have no API key assigned. This crosses workspace boundaries, allowing a user in Workspace A who has a valid API key to read the full configuration (including flowData, chatbotConfig, system prompts, and node configurations) of chatflows from Workspace B, Workspace C, and all other workspaces, as long as those chatflows have no API key assigned.\n\n## Details\n\nThe controller at `packages/server/src/controllers/chatflows/index.ts:90-107` validates the API key and calls the service:\n\n```typescript\nconst getChatflowByApiKey = async (req: Request, res: Response, next: NextFunction) =\u003e {\n    try {\n        const apikey = await apiKeyService.getApiKey(req.params.apikey)\n        if (\\!apikey) {\n            return res.status(401).send(\"Unauthorized\")\n        }\n        const apiResponse = await chatflowsService.getChatflowByApiKey(apikey.id, req.query.keyonly)\n        return res.json(apiResponse)  // Returns full chatflow objects with flowData\n    } catch (error) {\n        next(error)\n    }\n}\n```\n\nThe service at `packages/server/src/services/chatflows/index.ts:223-245` builds the database query:\n\n```typescript\nconst getChatflowByApiKey = async (apiKeyId: string, keyonly?: unknown): Promise\u003cany\u003e =\u003e {\n    const appServer = getRunningExpressApp()\n    let query = appServer.AppDataSource.getRepository(ChatFlow)\n        .createQueryBuilder(\"cf\")\n        .where(\"cf.apikeyid = :apikeyid\", { apikeyid: apiKeyId })\n    if (keyonly === undefined) {\n        // When keyonly is not set (default), also return ALL chatflows with no API key\n        query = query.orWhere(\"cf.apikeyid IS NULL\").orWhere(\"cf.apikeyid = \u0027\u0027\")\n    }\n    const dbResponse = await query.orderBy(\"cf.name\", \"ASC\").getMany()\n    return dbResponse  // Returns full ChatFlow entities including flowData\n}\n```\n\nWhen `keyonly` is not provided as a query parameter (which is the default case), the query expands to include:\n- All chatflows bound to the provided API key (same workspace, expected behavior)\n- ALL chatflows with `apikeyid IS NULL` (any workspace, no workspace filter)\n- ALL chatflows with empty `apikeyid` (any workspace, no workspace filter)\n\nThere is NO `workspaceId` filter in this query. The response includes the full `ChatFlow` entity, which contains:\n- `flowData` - the complete workflow graph including system prompts, model names, internal URLs, custom code\n- `chatbotConfig` - chatbot configuration including allowed origins\n- `apiConfig` - API configuration and override settings\n- `textToSpeech` / `speechToText` - TTS/STT configuration including credential IDs\n- `analytic` - analytics configuration\n\n## PoC\n\n```bash\n# Step 1: Attacker has a valid API key for Workspace A\nAPI_KEY=\"\u003cattacker-workspace-a-api-key\u003e\"\n\n# Step 2: Query the chatflows/apikey endpoint WITHOUT keyonly parameter\n# Returns the attacker chatflows PLUS all chatflows without API keys from ALL workspaces\ncurl -s \"http://localhost:3000/api/v1/chatflows/apikey/\" | jq \".[].workspaceId\"\n\n# Step 3: With keyonly parameter, only chatflows bound to the API key are returned\ncurl -s \"http://localhost:3000/api/v1/chatflows/apikey/?keyonly=true\" | jq \".[].workspaceId\"\n```\n\n## Impact\n\n- **Cross-Workspace Information Disclosure**: A user in any workspace can read the full configuration of chatflows from all other workspaces that do not have an API key assigned. This breaks workspace isolation.\n- **Intellectual Property Exposure**: System prompts, custom function code, and workflow architecture of chatflows from other workspaces/organizations are exposed.\n- **Credential Reference Leakage**: The `textToSpeech` and `speechToText` fields include credential IDs, which can be abused via the TTS generate endpoint.\n- **Amplified by Default**: Most chatflows are created without an API key assigned (API keys are opt-in), so the majority of chatflows in a multi-workspace deployment are affected.\n\n## Recommended Fix\n\nAdd workspace scoping to the `getChatflowByApiKey` query by passing the API key workspace ID and filtering the OR clause:\n\n```typescript\n// packages/server/src/services/chatflows/index.ts\nconst getChatflowByApiKey = async (apiKeyId: string, keyonly?: unknown, workspaceId?: string): Promise\u003cany\u003e =\u003e {\n    const appServer = getRunningExpressApp()\n    let query = appServer.AppDataSource.getRepository(ChatFlow)\n        .createQueryBuilder(\"cf\")\n        .where(\"cf.apikeyid = :apikeyid\", { apikeyid: apiKeyId })\n    if (keyonly === undefined \u0026\u0026 workspaceId) {\n        // Only include unprotected chatflows from the SAME workspace\n        query = query.orWhere(\n            \"(cf.apikeyid IS NULL OR cf.apikeyid = :empty) AND cf.workspaceId = :workspaceId\",\n            { empty: \"\", workspaceId }\n        )\n    }\n    const dbResponse = await query.orderBy(\"cf.name\", \"ASC\").getMany()\n    return dbResponse\n}\n```",
  "id": "GHSA-c2c9-mfw7-p8hw",
  "modified": "2026-06-22T22:21:47Z",
  "published": "2026-05-20T15:45:19Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-c2c9-mfw7-p8hw"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/FlowiseAI/Flowise"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Flowise: Cross-Workspace Chatflow Disclosure via chatflows/apikey Endpoint Returns All Unprotected Chatflows"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-56268 (GCVE-0-2026-56268)

GHSA-C2C9-MFW7-P8HW

Summary

Details

PoC

Impact

Recommended Fix

Tags

Sightings

Nomenclature