CVE-2026-46440 Flowise: Basic Auth Credentials Exposed via API
Attackers can expose basic authentication credentials via the API due to plaintext validation and lack of rate limiting in Flowise.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-46440?
CVE-2026-46440 is a high-severity vulnerability in Flowiseai Flowise, published on 8 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.1.2, the checkBasicAuth endpoint validates credentials in plaintext without rate limiting and with direct comparison. This issue has been patched in version 3.1.2.
Weakness: CWE-522
Which versions are affected by CVE-2026-46440?
2 open source packages ship an affected version, including flowise. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
flowise npm | All versions | 3.1.2 |
flowise npm | All versions | 3.1.2 |
Products include Flowiseai Flowise.
How do I fix CVE-2026-46440?
Upgrade flowise to 3.1.2 or later.
Is CVE-2026-46440 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-46440 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-php6-83fg-gw3g.