CVE-2026-56271 in Flowise
Flowise can fall back to hardcoded JWT secrets, which lets an attacker forge login tokens and act as any user, including an admin.
Quick answer
FlowiseAI Flowise should be reviewed and updated if it matches the affected versions. The recommended fix is to apply the vendor-supported patched version or the mitigation steps below, then retest the public website with Fixnx.
Who is affected
Affected versions
- Flowise 3.0.13 and earlier
- Flowise versions before 3.1.0
Fixed versions
- Flowise 3.1.0 or later
How to fix it
Update Flowise and set real JWT secrets. Old Flowise versions can let an attacker fake a login token and become an admin.
- Update Flowise to Flowise 3.1.0 or later.
- Set strong values for JWT_AUTH_TOKEN_SECRET and JWT_REFRESH_TOKEN_SECRET.
- Set real JWT_AUDIENCE and JWT_ISSUER values.
- Restart Flowise and rotate old sessions or tokens.
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Verify the fix
- Confirm Flowise is version 3.1.0 or later.
- Confirm no JWT setting uses the old default values.
Related categories
Trusted references
FAQ
What is affected by CVE-2026-56271?
FlowiseAI Flowise versions listed as affected should be reviewed: Flowise 3.0.13 and earlier, Flowise versions before 3.1.0.
What should I fix first?
Start with internet-facing sites, admin panels, login flows, plugins, themes, modules, packages, and systems that process user-controlled input or sensitive data.
How do I confirm the fix worked?
Apply the patched version or mitigation, clear caches where relevant, retest the affected workflow, and run a new Fixnx scan to verify public website exposure signals.
How are Fixnx security risk categories chosen?
Fixnx keeps one canonical risk page and assigns only broad, relevant categories such as ecosystem, technology area, or vulnerability class.