CVE-2026-70636: Flowise through 3.1.4 contains an authentication bypass vulnerability that allows unauthenticated attackers to access…
CVE-2026-70636 · Severity: high · CVSS 7.5 · Published 2026-08-06
Flowise through 3.1.4 contains an authentication bypass vulnerability that allows unauthenticated attackers to access the OAuth2 credential refresh endpoint by exploiting prefix-based whitelist matching in the authentication middleware defined in packages/server/src/utils/constants.ts. Attackers can send a POST request to the oauth2-credential refresh route with a trailing credential identifier to bypass all authentication and authorization checks, triggering unauthorized OAuth token rotation against credentials belonging to any workspace and potentially disrupting dependent OAuth integrations. This is a bypass of CVE-2026-41273.
No. Junglewise Threat Intelligence has no report of CVE-2026-70636 being exploited in the wild.
How severe is CVE-2026-70636?
High severity, with a CVSS score of 7.5, published 6 August 2026.
Which products and versions are affected?
FlowiseAI Flowise. The advisory does not name versions.
Is there a fix for CVE-2026-70636?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-70636?
Check whether you run FlowiseAI Flowise. 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.