High severity7.1NVD Advisory· Published Apr 23, 2026· Updated Apr 24, 2026
CVE-2026-41269
CVE-2026-41269
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
flowisenpm | < 3.1.0 | 3.1.0 |
Affected products
2Patches
Vulnerability mechanics
References
3- github.com/FlowiseAI/Flowise/security/advisories/GHSA-rh7v-6w34-w2rrnvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-rh7v-6w34-w2rrghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-41269ghsaADVISORY
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