Auth bypass in Flowise
CVE-2026-56268
Flowise before 3.1.2 contains an information disclosure vulnerability in the /api/v1/chatflows/apikey/:apikey endpoint. When the keyonly query parameter is omitted (the default), the endpoint returns not only the chatflows bound to the supplied API key but also all chatflows across every workspace that have no API key assigned, because the underlying query lacks any workspace filter. An attacker with a valid API key for one workspace can therefore retrieve the full ChatFlow configuration (including flowData with system prompts and node configurations, chatbotConfig, apiConfig, and credential IDs) of unprotected chatflows belonging to other workspaces.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (30.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 30.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Flowise — versions 0, 3.1.2
- Flowiseai Flowise
Weakness classification (CWE)
References
- github.com/FlowiseAI/Flowise/security/advisories/GHSA-c2c9-mfw7-p8hw (Exploit, vendor-advisory, Third Party Advisory)
- www.vulncheck.com/advisories/flowise-cross-workspace-information-disclosure-via… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-56268?
- CVE-2026-56268 is a high-severity vulnerability in Flowise, classified under Incorrect Authorization. CVSS score: 7.7/10. Published 2026-06-22.
- How severe is CVE-2026-56268?
- High severity. CVSS v3 base score is 7.7 out of 10.