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CVE-2026-41269

Flowise: File Upload Validation Bypass in createAttachment PUBLISHED

Description (CNA)

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, the Chatflow configuration file upload settings can be modified to allow the application/javascript MIME type. This lets an attacker upload .js files even though the frontend doesn’t normally allow JavaScript uploads. This enables attackers to persistently store malicious Node.js web shells on the server, potentially leading to Remote Code Execution (RCE). This vulnerability is fixed in 3.1.0.

Affected (CNA)

Vendor / productVersions
FlowiseAI / Flowiseaffected < 3.1.0

CWE

CWE-434

References

ADP enrichment

CISA-ADP

No English description supplied.