CVE-2026-91935

EUVD-2026-78793
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.
SSRF
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
8.3 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: 32.94%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
flowiseaiflowise
𝑥
< 3.1.4
CNA
Common Weakness Enumeration
References
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-hx55-h48h-7rw9
https://www.vulncheck.com/advisories/flowise-before-3.1.4-ssrf-and-api-key-exfiltration-via-chat-model-nodes