What is CVE-2025-59528 in Flowise?

It's a CVSS 10 remote code execution flaw from unsanitized JavaScript inputs, letting attackers run code and access files on vulnerable servers.

How do I fix Flowise CVE-2025-59528?

Update to v1.5.3 or later, restrict API access, and scan your instance with tools like Nuclei for confirmation.

Is Flowise still safe after CVE-2025-59528?

For non-prod use with patches, yes — but audit configs. Prod demands alternatives or heavy hardening.

🕳️ Vulnerabilities & CVEs

Flowise's Perfect-Score Flaw CVE-2025-59528: Attackers Already Inside

Flowise users thought they had a quick path to LLM apps. Wrong. Attackers are chaining CVE-2025-59528 for remote code execution, turning dev tools into backdoors.

theAIcatchup Apr 08, 2026 4 min read 10 views

Red alert graphic showing attackers exploiting Flowise CVE-2025-59528 for remote code execution

⚡ Key Takeaways

CVE-2025-59528 is a CVSS 10 RCE in Flowise from bad JS validation, actively exploited. 𝕏
Patch to v1.5.3+, firewall endpoints — default setups are wide open. 𝕏
Echoes Log4Shell; expect AI low-code security shakeout, with enterprise pivot needed. 𝕏

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#AI security exploit #CVE-2025-59528 #Flowise vulnerability #RCE exploit #remote code execution

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Originally reported by SecurityAffairs

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