CVE-2026-56270
HIGHFlowise - Unauthenticated OAuth Secrets Disclosure via /api/v1/loginmethod Endpoint
Title source: cnaDescription
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.
References (2)
Core 2
Core References
Vendor Advisory vendor-advisory
GitHub Security Advisory (GHSA-6pcv-j4jx-m4vx)
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-6pcv-j4jx-m4vx
Third Party Advisory third-party-advisory
VulnCheck Advisory: Flowise - Unauthenticated OAuth Secrets Disclosure via /api/v1/loginmethod Endpoint
https://www.vulncheck.com/advisories/flowise-unauthenticated-oauth-secrets-disclosure-via-api-v1-loginmethod-endpoint
Scores
CVSS v3
7.5
EPSS
0.0038
EPSS Percentile
30.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-306
Status
published
Products (4)
Flowise/Flowise
< 3.1.0
Flowise/Flowise
3.1.0
flowiseai/flowise
< 3.1.0
npm/flowise
0 - 3.1.0npm
Published
Jun 24, 2026
Tracked Since
Jun 24, 2026