What’s Vulnerable › Vulnerabilities
CVE-2026-7664: Unauthenticated Flow Execution via Webhook Endpoint in Langflow OSS
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-06-22 · updated 2026-10-25
- Weakness: CWE-287
Description
IBM Langflow OSS 1.0.0 through 1.8.4 could allow unauthenticated attackers to access protected MCP project resources and execute MCP operations due to improper authorization enforcement in the Streamable MCP transport endpoint.
Affected products
- IBM Langflow OSS: from 1.0.0 through 1.8.4
References
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