CVE-2026-30820 Flowise Authorization Bypass via Spoofed x-request-from Header
Low-privilege users can bypass authorization checks by spoofing a header, gaining access to internal admin endpoints and executing custom functions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-30820?
CVE-2026-30820 is a high-severity authentication bypass vulnerability in Flowiseai Flowise, published on 7 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.0.13, Flowise trusts any HTTP client that sets the header x-request-from: internal, allowing an authenticated tenant session to bypass all /api/v1/** authorization checks. With only a browser cookie, a low-privilege tenant can invoke internal administration endpoints (API key management, credential stores, custom function execution, etc.), effectively escalating privilege. This issue has been patched in version 3.0.13.
Weakness: CWE-863
Which versions are affected by CVE-2026-30820?
2 open source packages ship an affected version, including flowise. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
flowise npm | All versions | 3.0.13 |
flowise npm | All versions | 3.0.13 |
Products include Flowiseai Flowise.
How do I fix CVE-2026-30820?
Upgrade flowise to 3.0.13 or later.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-30820 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-30820 exists.
Other vulnerabilities in Flowiseai Flowise
- CVE-2025-71338 Flowise through 2.2.7 - Arbitrary File Write to Remote Code Execution via document-store API
- CVE-2026-40933 Flowise: Authenticated RCE Via MCP Adapters
- CVE-2025-61913 Flowise is vulnerable to arbitrary file read, arbitrary file write
- CVE-2025-59528 Flowise has Remote Code Execution vulnerability
- CVE-2026-52098 Code injection in n/a
Sources
Also known as GHSA-wvhq-wp8g-c7vq.