Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Flowiseai | Flowise | < 3.1.0 |
Related Weaknesses (CWE)
References
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-rh7v-6w34-w2rrExploitVendor Advisory
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-rh7v-6w34-w2rrExploitVendor Advisory
FAQ
What is CVE-2026-41269?
CVE-2026-41269 is a vulnerability with a CVSS score of 7.1 (HIGH). 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/javasc...
How severe is CVE-2026-41269?
CVE-2026-41269 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-41269?
Check the references section above for vendor advisories and patch information. Affected products include: Flowiseai Flowise.