CVE-2026-6599
mediumpriority · track · 0EPSS 0.004 · 32 %ileDEEUUSEPSS · scored 2026-10-23
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 1.3–6.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (7)
Products and version ranges known to be affected.
advisories (3)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-1178Langflow: Mehrere SchwachstellenDeutsch2026-04-19csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Langflow ausnutzen, um Dateien zu manipulieren, vertrauliche Informationen offenzulegen oder Cross-Site-Scripting-Angriffe durchzuführen.
- GHSA-v66p-f7x3-4794Langflow vulnerable to injection2026-04-20ghsa · osvUS
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.
- PYSEC-2026-2569Langflow vulnerable to injection2026-07-13vendor · osvUS
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.
also known as (5)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (10)
External citations — patches, advisories, analysis.
- https://github.com/langflow-ai/langflow/releasesPatchcnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2026-6599cnnvd
- https://gist.github.com/chenhouser2025/a909c47316b7a0948ee68c109ab747a3enisa_euvd
- https://vuldb.com/submit/791922enisa_euvd
- https://vuldb.com/vuln/358234enisa_euvd
- https://vuldb.com/vuln/358234/ctienisa_euvd
- https://gist.github.com/chenhouser2025/a909c47316b7a0948ee68c109ab747a3nvd
- https://vuldb.com/submit/791922nvd
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