FlowiseAI Flowise up to 3.1.4 SSRF Guard httpSecurity.ts server-side request forgery

Summaryinfo

A vulnerability was found in FlowiseAI Flowise up to 3.1.4 and classified as problematic. Affected is an unknown function of the file httpSecurity.ts of the component SSRF Guard. Such manipulation leads to server-side request forgery. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is listed as CVE-2026-67620. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in FlowiseAI Flowise up to 3.1.4. It has been rated as problematic. Affected by this issue is an unknown code of the file httpSecurity.ts of the component SSRF Guard. The manipulation with an unknown input leads to a server-side request forgery vulnerability. Using CWE to declare the problem leads to CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. Impacted is confidentiality. CVE summarizes:

Flowise through 3.1.4 contains a server-side request forgery vulnerability in the SSRF guard implemented in httpSecurity.ts, where the DEFAULT_DENY_LIST omits the Oracle Cloud Infrastructure metadata endpoint 192.0.0.192 and the Alibaba Cloud metadata endpoint 100.100.100.200, allowing authenticated attackers to force the server to issue arbitrary GET requests to cloud instance metadata services. Attackers can send requests to the fetch-links API endpoint with a crafted URL parameter, bypassing deny-list validation including redirect-based bypasses, to reach instance metadata services and expose instance identity data and role credentials on Oracle Cloud Infrastructure or Alibaba Cloud deployments, with unauthenticated access possible when URL-fetching nodes exist in public chatflows.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-67620 since 07/29/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/08/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-54793). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• FlowiseAI

Name

• Flowise

Version

• 3.1.0
• 3.1.1
• 3.1.2
• 3.1.3
• 3.1.4

Support

• end of life

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Once again VulDB remains the best source for vulnerability data.

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