Vulnerability · Published Sep 15, 2026 · Assigned by VulnCheck
CVE-2026-91935Flowise before 3.1.4 SSRF and API Key Exfiltration via Chat Model Nodes
High 8.3
In plain English
A high-severity server-side request forgery in Flowise from FlowiseAI. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).
Severity (CVSS 3.1)8.3High
Exploit odds (30 days)0.4%top 66.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Flowise before 3.1.4 fails to validate baseURL parameters in chat-model nodes, allowing authenticated users to redirect requests to arbitrary hosts. Attackers with chatflows:create or chatflows:update permissions can exfiltrate LLM provider API keys by redirecting requests to cloud metadata services or internal hosts.
Affected products (as reported)
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
References
- GitHub Security Advisory (GHSA-hx55-h48h-7rw9) vendor-advisory
- VulnCheck Advisory: Flowise before 3.1.4 SSRF and API Key Exfiltration via Chat Model Nodes third-party-advisory