High severity7.5NVD Advisory· Published Jun 24, 2026· Updated Jun 26, 2026
CVE-2026-56270
CVE-2026-56270
Description
Flowise before 3.1.0 (versions 3.0.13 and earlier) contains a missing authentication vulnerability in the /api/v1/loginmethod endpoint that allows unauthenticated users to retrieve an organization's complete SSO configuration, including OAuth client secrets in cleartext, by providing an organizationId parameter. Remote attackers can send a GET request to harvest sensitive API credentials for Google, Microsoft/Azure, GitHub, and Auth0 integrations. This affects FlowiseAI Cloud and self-hosted instances where the endpoint is exposed.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
flowisenpm | < 3.1.0 | 3.1.0 |
Affected products
2Patches
Vulnerability mechanics
References
3- github.com/FlowiseAI/Flowise/security/advisories/GHSA-6pcv-j4jx-m4vxnvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-6pcv-j4jx-m4vxghsaADVISORY
- www.vulncheck.com/advisories/flowise-unauthenticated-oauth-secrets-disclosure-via-api-v1-loginmethod-endpointnvdThird Party Advisory
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