CVE-2026-46440: FlowiseAI Flowise insufficient credential protection in checkBasicAuth

CVE-2026-46440 · Severity: high · CVSS 7.5 · Published 2026-06-08

FlowiseAI, an open-source tool for building LLM applications, contains a security flaw in its authentication system. Attackers can perform unlimited login attempts to guess administrative credentials because the system lacks rate limiting and uses insecure comparison methods. If successful, an attacker could gain full access to the application and its configured AI workflows.

Technologies: FlowiseAI, flowise (npm). Vendors: FlowiseAI, npm.

Quick answers

Is CVE-2026-46440 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-46440 being exploited in the wild.
How severe is CVE-2026-46440?
High severity, with a CVSS score of 7.5, published 8 June 2026.
Which products and versions are affected?
FlowiseAI <= 3.1.1; flowise (npm) <= 3.1.1, SEMVER:introduced=0,fixed=3.1.2.
Is there a fix for CVE-2026-46440?
Yes. flowise (npm): upgrade to 3.1.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-46440 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-46440?
Check whether you run FlowiseAI or flowise (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • flowise (npm): upgrade to 3.1.2 or later
    npm install flowise@3.1.2

Technical details

The `checkBasicAuth` endpoint in `account.controller.ts` validates credentials by comparing plaintext request body values directly against environment variables using the JavaScript `===` operator. This implementation lacks rate limiting, enabling high-speed brute-force attacks, and is susceptible to timing attacks because the comparison is not constant-time. Additionally, the endpoint returns distinct success and failure messages, allowing for credential enumeration. An attacker can exploit these weaknesses to gain unauthorized access to the Flowise server. The vulnerability is addressed in version 3.1.2.

Affected products

  • FlowiseAI flowise <= 3.1.1

Identifiers

  • CVE-2026-46440
  • GHSA-php6-83fg-gw3g

Timeline

  • 2026-05-14: disclosed
  • 2026-05-14: advisory
  • 2026-05-14: patched: Fixed in version 3.1.2

References

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