High severity · published Sep 15, 2026
CVE-2026-91935
Flowise before 3.1.4 SSRF and API Key Exfiltration via Chat Model Nodes
8.3
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 33% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FL
Flowise · FlowiseAI
before 3.1.4; before 3.1.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-91935
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-91935
github.com
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-hx55-h48h-7rw9
www.vulncheck.com
https://www.vulncheck.com/advisories/flowise-before-3.1.4-ssrf-and-api-key-exfiltration-via-chat-model-nodes
More from Flowise
10.0
CVE-2026-70478
Flowise: Unauthenticated OAuth2 token refresh endpoint returns access tokens — enables token theft for any connected service
10.0
CVE-2025-59528
Flowise has Remote Code Execution vulnerability
9.9
CVE-2026-73602
Flowise before 3.1.3 Sandbox Escape to RCE
9.9
CVE-2026-67622
Flowise 3.1.4 IDOR in OpenAI Assistants Integration
9.9
CVE-2026-56274
Flowise - Remote Code Execution via MCP Security Bypass in validateCommandFlags and validateArgsForLocalFileAccess