Access Control Bypass Affecting flowise package, versions <3.0.13
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-JS-FLOWISE-15440715
- published9 Mar 2026
- disclosed6 Mar 2026
- creditGiuseppe Massaro
Introduced: 6 Mar 2026
NewCVE-2026-30820 (opens in a new tab)How to fix?
Upgrade flowise to version 3.0.13 or higher.
Overview
flowise is a Flowiseai Server
Affected versions of this package are vulnerable to Access Control Bypass in the middleware that processes requests to /api/v1 endpoints. An attacker can gain unauthorized access to internal administration APIs by spoofing the x-request-from header as 'internal' while possessing a valid session cookie. This allows privilege escalation, including actions such as creating API keys, accessing credential stores, and executing custom functions.