Auth bypass in Flowiseai Flowise
CVE-2026-41266
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, /api/v1/public-chatbotConfig/:id ep exposes sensitive data including API keys, HTTP authorization headers and internal configuration without any authentication. An attacker with knowledge just of a chatflow UUID can retrieve credentials stored in password type fields and HTTP headers, leading to credential theft and more. This vulnerability is fixed in 3.1.0.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (40.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.041 · newest: 0.005 · change: -0.036
Affected products
- Flowiseai Flowise — versions < 3.1.0
Weakness classification (CWE)
References
- github.com/FlowiseAI/Flowise/security/advisories/GHSA-4jpm-cgx2-8h37 (Exploit, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-41266?
- CVE-2026-41266 is a high-severity vulnerability in Flowiseai Flowise, classified under Information Disclosure. CVSS score: 7.5/10. Published 2026-04-23.
- How severe is CVE-2026-41266?
- High severity. CVSS v3 base score is 7.5 out of 10.