CVE•Published 2026-04-23•Modified 2026-04-24•1 article on news•7 live references•NVD data

CVE-2026-41273Flowiseai · Flowise

Vulnerability data via NVD (ingested)

CVSS v3.1

8.2

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

EPSS percentile

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Weaknesses (CWE)

CWE-306Missing Authentication for Critical Function

Description

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, Flowise contains an authentication bypass vulnerability that allows an unauthenticated attacker to obtain OAuth 2.0 access tokens associated with a public chatflow. By accessing a public chatflow configuration endpoint, an attacker can retrieve internal workflow data, including OAuth credential identifiers, which can then be used to refresh and obtain valid OAuth 2.0 access tokens without authentication. This vulnerability is fixed in 3.1.0.

Timeline

Published 2026-04-23

Modified 2026-04-24

External references

NVD MITRE Exploit-DB GitHub PoC Sploitus trickest/cve VulnCheck

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 tag173 hosts

vuln:CVE-2026-41273

Hosts 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-2026-41273