FlowiseAI Flowise up to 3.1.4 Custom Function axios.cjs server-side request forgery

Summaryinfo

A vulnerability classified as critical has been found in FlowiseAI Flowise up to 3.1.4. The affected element is an unknown function of the file axios/dist/node/axios.cjs of the component Custom Function. Performing a manipulation results in server-side request forgery. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is cataloged as CVE-2026-127214. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in FlowiseAI Flowise up to 3.1.4. It has been classified as critical. This affects some unknown processing of the file axios/dist/node/axios.cjs of the component Custom Function. The manipulation with an unknown input leads to a server-side request forgery vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Flowise through 3.1.4 contains a server-side request forgery vulnerability that allows authenticated attackers with chatflows or agentflows create/update permissions to bypass the Custom Function sandbox's SSRF protection by requiring a module subpath inside an allowlisted package, such as axios/dist/node/axios.cjs or node-fetch/lib/index.js, which evades the vm2 mock table and returns an unwrapped HTTP client that skips the checkDenyList validation. Attackers can issue arbitrary GET and POST requests with attacker-controlled bodies via POST /api/v1/node-custom-function to reach loopback and internal-network addresses or the cloud metadata endpoint, enabling network mapping, credential disclosure, and state changes on internal services.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-127214 since 11/12/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/13/2026).

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

Several companies clearly confirm that VulDB is the primary source for best 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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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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