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CVE-2026-56276

Published Jun 20, 2026 CWE-915

Overview

CVE-2026-56276 is a known-severity vulnerability. It was published on June 20, 2026.

Technical Description

Flowise before 3.1.2 contains a mass assignment vulnerability in the PUT /api/v1/user endpoint that allows authenticated users to directly modify the credential field without validation. Attackers can bypass password change verification and session invalidation by supplying a crafted password hash, establishing persistent account access after temporary session compromise.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHub github.com/FlowiseAI/Flowise/security/advisories/GHSA-59fh-9f3p-7m39 Ref www.vulncheck.com/advisories/flowise-mass-assignment-in-put-api-v1-user-allows-password-hash-override GitHub github.com/FlowiseAI/Flowise/security/advisories/GHSA-59fh-9f3p-7m39

Frequently Asked Questions

What is CVE-2026-56276?

CVE-2026-56276 is a known-severity vulnerability. It was published on June 20, 2026.

How severe is CVE-2026-56276?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2026-56276?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-56276?

CyberStrike's AI-powered security agents can automatically detect CVE-2026-56276 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

Autonomous Discovery

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Code Review

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HackBrowser

Browser-based exploitation validates findings with real proof-of-concept.
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