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Vulnerability record · CVE-2026-73602 · published 13 August 2026

CVE-2026-73602: Flowiseai flowise vulnerability

Flowiseai · Flowise

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.

9.0 CVSS 4.0 Critical EPSS 0.83% · top 44.3% CWE-95 · CWE-95
9.0CVSS 4.0 base score
0.83%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 1 tagged exploit
4 Sep 2026Last modified by NVD

Description

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.

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/FlowiseAI/Flowise/commit/4211bfc8f15746be4019bba557e29a7ba83d54c5 Broken Link
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-rqh4-rxw3-93rp ExploitVendor Advisory
https://www.vulncheck.com/advisories/flowise-before-sandbox-escape-to-rce Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-73602), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.