PatchTheCVECVE-2026-56270: Flowise before 3.1.0 (versions 3.0.13 and earlier) contains a missing authentication vulnerability in the /api
CVE-2026-56270 is a high-severity flaw (CVSS 7.5) affecting flowise. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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
Why this priority
- High severity
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 2.0% (top 19%) |
| CISA exploited list | No |
| Weakness | CWE-306 |
| Published | 2026-06-24 |
| Last modified | 2026-06-26 |
Last updated 2026-06-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Exact fixes by distribution
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- Write-up: github.com/FlowiseAI/Flowise/security/advisories/GHSA-6pcv-j4jx-m4vx
- Nuclei scan template: Flowise <= 3.0.13 - Unauthenticated OAuth Configuration Disclosure
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-56270?
flowise: upgrade to 3.1.0. Exact commands for each OS are on this page.
Is CVE-2026-56270 being exploited?
CVE-2026-56270 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-56270 affect?
CVE-2026-56270 affects flowise. Severity is high (CVSS 7.5). 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 OAu
How urgent is CVE-2026-56270?
Priority 57/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action
Software pages
GitHub vulnerabilities · Azure vulnerabilities · Auth0 vulnerabilities
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