CVE•Published 2026-08-13•Modified 2026-09-04•1 article on news•5 live references•NVD data
CVE-2026-73601Flowiseai · Flowise
Vulnerability data via NVD (ingested)
CVSS v3.1
8.8
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
47
Exploit Prediction Scoring System · top 53% of all CVEs
Weaknesses (CWE)
Description
Flowise versions before 3.1.3 contain a remote code execution vulnerability in the Custom MCP node when CUSTOM_MCP_PROTOCOL is set to stdio, allowing authenticated users to execute arbitrary commands by manipulating environment variables and command arguments. Attackers can abuse PYTHONWARNINGS and BROWSER environment variables with python3, or leverage the root working directory with node to bypass validation and execute system commands.
Timeline
Published 2026-08-13
Modified 2026-09-04
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag2,304 hosts
vuln:CVE-2026-73601Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Flowiseai Flowise"All exposed Flowiseai Flowise instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Flowise"HTTP body or banner mentions "Flowise" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-73601Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-73601Censys host search filtered to this CVE id.
grep.app
CVE-2026-73601Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-73601GitHub code search for direct mentions.
Google dork
"CVE-2026-73601" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.