FlowiseAI Flowise up to 3.1.4 LocalFileStore utils.ts os command injection

Summaryinfo

A vulnerability categorized as critical has been discovered in FlowiseAI Flowise up to 3.1.4. Affected by this issue is some unknown functionality of the file packages/components/src/utils.ts of the component LocalFileStore. The manipulation results in os command injection. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is identified as CVE-2026-119978. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as critical, was found in FlowiseAI Flowise up to 3.1.4. Affected is an unknown functionality of the file packages/components/src/utils.ts of the component LocalFileStore. The manipulation with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Flowise through 3.1.4 contains a sandbox escape vulnerability that allows authenticated users to execute OS commands by abusing allowlisted langchain and mammoth modules when ALLOW_BUILTIN_DEP=true. Attackers can submit JavaScript to /api/v1/node-custom-function that writes a file into the mammoth package via LocalFileStore and requires it, escaping vm2 as the Flowise process user.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-119978 since 10/30/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. 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 10/30/2026). The MITRE ATT&CK project declares the attack technique as T1202.

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

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

Website

• Product: https://github.com/FlowiseAI/Flowise/

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Once again VulDB remains the best source for vulnerability data.

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