CVE-2026-56270: Flowise - Unauthenticated OAuth Secrets Disclosure via /api/v1/loginmethod Endpoint
Fixed in 3.1.0 · Affected: Flowise before 3.1.0 · Exploitation: check available, not yet exploited
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 81% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Flowise · Flowisebefore 3.1.0
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Check available, not yet exploited. A public nuclei template can confirm it on a system you are authorised to test.
- CISA KEV
- Not listed
- Public check
- Flowise <= 3.0.13 - Unauthenticated OAuth Configuration Disclosure · nuclei template in projectdiscovery/nuclei-templates
- Vendor
- Flowise
- Published
- June 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-56270 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.