PT-2026-33705 · Langflow Ai · Langflow

Eric-F · Published 2026-04-20 · Updated 2026-04-20 · CVE-2026-6599

NVD

CVSS v2.0

6.5

Medium

AV:N/AC:L/Au:S/C:P/I:P/A:P

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.

Exploit

Fix

Improper Neutralization

Special Elements Injection

Weakness Enumeration

CWE-707

CWE-74

Related Identifiers

CVE-2026-6599

Affected Products

Langflow

References · 5

• 🔥 https://gist.github.com/chenhouser2025/a909c47316b7a0948ee68c109ab747a3 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-6599 · Security Note
• https://vuldb.com/submit/791922 · Note
• https://vuldb.com/vuln/358234 · Note
• https://vuldb.com/vuln/358234/cti · Note