What is CVE-2025-34267?

CVE-2025-34267 is a critical-severity vulnerability in Flowiseai Flowise, classified under Command Injection. CVSS score: 9.9/10. Published 2025-10-14.

How severe is CVE-2025-34267?

Critical severity. CVSS v3 base score is 9.9 out of 10.

RCE in Flowiseai Flowise

CVE-2025-34267

Flowise v3.0.1 < 3.0.8 and all versions after with 'ALLOW_BUILTIN_DEP' enabled contain an authenticated remote code execution vulnerability and node VM sandbox escape due to insecure use of integrated modules (Puppeteer and Playwright) within the nodevm execution environment. An authenticated attacker able to create or run a tool that leverages Puppeteer/Playwright can specify attacker-controlled browser binary paths and parameters. When the tool executes, the attacker-controlled executable/parameters are run on the host and circumvent the intended nodevm sandbox restrictions, resulting in execution of arbitrary code in the context of the host. This vulnerability was incorrectly assigned as a duplicate CVE-2025-26319 by the developers and should be considered distinct from that identifier.

Vulnerability class: Command Injection (OS Command Injection)

Published 2025-10-14 · last modified 2026-09-30.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.066 (93.6th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 93.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.061 · newest: 0.066 · change: +0.005

Affected products

Flowiseai Flowise — versions 3.0.1

Weakness classification (CWE)

CWE-77 — Command Injection

References

flowiseai.com/ (Product, product)
github.com/FlowiseAI/Flowise/security/advisories/GHSA-5w3r-f6gm-c25w (vendor-advisory, Exploit, technical-description, exploit, Vendor Advisory)
github.com/FlowiseAI/Flowise/pull/5231 (issue-tracking, patch, Issue Tracking)
www.vulncheck.com/advisories/flowise-auth-command-execution-and-sandbox-bypass-… (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2025-34267?: CVE-2025-34267 is a critical-severity vulnerability in Flowiseai Flowise, classified under Command Injection. CVSS score: 9.9/10. Published 2025-10-14.
How severe is CVE-2025-34267?: Critical severity. CVSS v3 base score is 9.9 out of 10.