CVE-2026-73602: flowiseai flowise

CVSS 9.9 (critical) · published 2026-08-13

Flowise before 3.1.3 contains a sandbox escape vulnerability in the vm2 JavaScript sandbox that allows authenticated users to execute arbitrary code by exploiting moment locale validation bypass. Attackers can craft a fake String object with a match function that bypasses path traversal checks to load and execute malicious JavaScript files stored in the document store outside the sandbox.

Affected products (NVD): flowiseai flowise

Fixed in (NVD): 3.1.3

Weakness: CWE-95

Source: NVD CVE-2026-73602

References

• https://github.com/FlowiseAI/Flowise/commit/4211bfc8f15746be4019bba557e29a7ba83d54c5
• https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-rqh4-rxw3-93rp
• https://www.vulncheck.com/advisories/flowise-before-sandbox-escape-to-rce

Check your software

Connect an AI agent to the FixLane MCP server or ask the Telegram bot to check what you have installed against incidents with a verified fixed version.