CVE-2026-56270: Flowise Unauthenticated Information Disclosure of OAuth Secrets
Flowise
Flowise contains a missing authentication flaw on its login endpoint that lets unauthenticated users retrieve cleartext OAuth client secrets. A security update is available to fix the disclosure.
disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why
- CVSS
- 5.3
- EPSS
- 0.02 · top 19% · 2026-11-13
- fix status
- Fix status unknown
- first report
- 16 Apr 2026
- last update
- 24 Jun 2026
- CVE ids
Timeline · 2
Sources · 2
Advisories and databases
- 2026-04-16CVE-2026-56270: Flowise: Unauthenticated Information Disclosure of OAuth Secrets (Cleartext) via GET RequestGitHub Advisory Database · github.com/advisories/GHSA-6pcv-j4jx-m4vx
- 2026-06-24CVE-2026-56270: Flowise before 3.1.0 (versions 3.0.13 and earlier) contains a missing authentication vulnerability in the /api/v1/loginmethod…NVD · nvd.nist.gov/vuln/detail/CVE-2026-56270
Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.
Classification
- lane
- Patch now
- AI role
- Attack on AI
- categories
- Infrastructure vulnerabilityData leak
- severity
- 2 · Disclosed vulnerability
- fix status
- Fix status unknown
- targets
- Framework / tooling
- mitre atlas
- no technique for these categories
- dates
- happened 16 Apr 2026 · first reported 16 Apr 2026
- origin
- GitHub Advisory DatabaseVulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
- record
- confidence 0.95 · created 2026-10-18 07:00Z · updated 2026-10-18 10:04Z
Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned
Copy a brief
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the brief as text
# CVE-2026-56270: Flowise Unauthenticated Information Disclosure of OAuth Secrets https://gcdradar.vercel.app/incidents/cve-2026-56270-flowise-unauthenticated-information-disclosur · AIR-2026-0585 · closed 2026-04-16 - Lane: Patch now - Severity: 2 (Disclosed vulnerability) - Fix status: Fix status unknown - First reported: 2026-04-16 - AI role: Attack on AI - Products: Flowise - CVE ids: CVE-2026-56270 - CVSS: 5.3 ## Summary Flowise contains a missing authentication flaw on its login endpoint that lets unauthenticated users retrieve cleartext OAuth client secrets. A security update is available to fix the disclosure. ## What to do No action recorded; read the sources below and the vendor's advisory. ## Latest updates - 2026-06-24: CVE-2026-56270: Flowise before 3.1.0 (versions 3.0.13 and earlier) contains a missing authentication vulnerability in the /api/v1/loginmethod… (https://nvd.nist.gov/vuln/detail/CVE-2026-56270) - 2026-04-16: CVE-2026-56270: Flowise: Unauthenticated Information Disclosure of OAuth Secrets (Cleartext) via GET Request (https://github.com/advisories/GHSA-6pcv-j4jx-m4vx) ## Sources - 2026-04-16 GitHub Advisory Database: CVE-2026-56270: Flowise: Unauthenticated Information Disclosure of OAuth Secrets (Cleartext) via GET Request https://github.com/advisories/GHSA-6pcv-j4jx-m4vx - 2026-06-24 NVD: CVE-2026-56270: Flowise before 3.1.0 (versions 3.0.13 and earlier) contains a missing authentication vulnerability in the /api/v1/loginmethod… https://nvd.nist.gov/vuln/detail/CVE-2026-56270 Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.
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AI