Is CVE-2026-6599 actively exploited?

No active exploitation of CVE-2026-6599 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-6599 be exploited remotely?

Yes. CVE-2026-6599 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-6599?

CVE-2026-6599 has a CVSS score of 6.3 (MEDIUM).

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MEDIUM

CVE-2026-6599

CWE-74Published: April 20, 2026· Updated: Apr 22, 2026

6.3

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:12.4th

Official Description

A vulnerability was detected in langflow-ai langflow up to 1.8.3. The impacted element is the function get_client_ip/install_mcp_config of the file src/backend/base/langflow/api/v1/mcp_projects.py of the component Model Context Protocol Configuration API. Performing a manipulation of the argument X-Forwarded-For results in injection. The attack may be initiated remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

NVD Source

Technical Analysis

CVE-2026-6599 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.