On June 16-17, 2026, five security advisories were published for Langflow, an AI agent and MCP server development...
On June 16-17, 2026, five security advisories were published for Langflow, an AI agent and MCP server development platform.
signal brief
On June 16-17, 2026, five security advisories were published for Langflow, an AI agent and MCP server development platform. The vulnerabilities include:
- Path Traversal in Knowledge Bases API (CVE-2026-42867)
- IDOR/BOLA in Monitor API (CVE-2026-33760)
- Unauthenticated arbitrary file read in Shareable Playground (CVE-2026-48520)
- Unauthenticated RCE in Shareable Playgrounds (CVE-2026-48519)
- Unauthenticated file upload leading to DoS and information leak (CVE-2026-55450)
These CVEs affect core features, including unauthenticated access controls, potentially enabling remote code execution and data exfiltration. The disclosures come during active development (daily dev releases on PyPI, e.g., v1.11.0.dev5 through .dev11). While the project maintains a strong feature set and positive user testimonials, the severity and number of vulnerabilities pose a significant trust risk for developer adoption and enterprise deployment. Immediate patching and reputation recovery are required, likely dampening short-term growth and confidence in the platform.
evidence
Decision support, not stock advice. This signal is research with cited evidence — not a recommendation to buy, sell, or hold any security.