CVE-2026-91935CWE-918ssrf

CVE-2026-91935

High · published September 15, 2026

CVSS v3.1
8.3
EPSS
0%
Percentile
31.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
CVSS v4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
EPSS
0.00388 · 31.8th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-09-15T20:17Z
References (2)
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-hx55-h48h-7rw9 · [email protected]https://www.vulncheck.com/advisories/flowise-before-3.1.4-ssrf-and-api-key-exfiltration-via-chat-model-nodes · [email protected]
EPSS history
Timeline
  • 17 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 15 SEP 15:17Z
    Flowise before 3.1.4 SSRF and API Key Exfiltration via Chat Model Nodes
    cvelistv5