AI and data stack advisories

Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

LangflowGHSA-v66p-f7x3-4794

Langflow vulnerable to injection

Langflow

CVE-2026-6599 · Published Apr 20, 2026 · updated Jul 13, 2026

Low6.3
No fix yet
GitHub advisory

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.

Affected versions

PackageAffectedFixed in
langflow
PyPI
<= 1.8.3No fix yet
Details and references
CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Severity from
GitHub (reviewed advisory)
Weakness
CWE-74
Also known as
CVE-2026-6599, PYSEC-2026-2569

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