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CVE-2026-73602

Flowise before 3.1.3 Sandbox Escape to RCE

Published: Aug 13, 2026Updated: Sep 4, 2026 Sources: CVE List NVDCWE-95
9.9CRITICAL
NVD MITRE
EPSS Score
0.8%
Top 44.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-95

Affected Products

FlowiseAI
oss-projectaka flowise-components, flowise, embed
FlowiseOn-premWeb App
AI / ML / ai-agent-tooling
and 1 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2026-73602?We can run the check for you — a free external exposure review, no install. Check my exposure

References

https://github.com/FlowiseAI/Flowise/commit/4211bfc8f15746be4019bba557e29a7ba83d54c5
github.com
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-rqh4-rxw3-93rp
github.com
https://www.vulncheck.com/advisories/flowise-before-sandbox-escape-to-rce
vulncheck.com
News mentions
1

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