6.5
Medium
CVE-2026-9186 IBM Langflow OSS 1.0.0 through 1.11.2 allows remote authenticated attackers to bypass localhost-only MCP configuration…
Description
IBM Langflow OSS 1.0.0 through 1.11.2 allows remote authenticated attackers to bypass localhost-only MCP configuration installation by spoofing X-Forwarded-For: 127.0.0.1 header, enabling arbitrary writes to IDE config files (~/.cursor/mcp.json, etc.).
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Langflow OSS 1.0 | 1.0.0 → 1.11.2 | No fix stated |
Other CVEs of Langflow OSS
The 176 CVEs of Langflow OSS →
CVE-2026-18894
IBM Langflow OSS 1.0.0 through 1.12.4 could allow a remote attacker to trigger pre-existing stored Python component code…
6.5
Medium
CVE-2026-77817
IBM Langflow OSS 1.0.0 through 1.12.4 could allow a remote authenticated attacker to obtain sensitive information due to…
6.5
Medium
CVE-2026-77819
IBM Langflow OSS 1.0.0 through 1.12.3 could allow a remote authenticated attacker to overwrite arbitrary files due to…
6.5
Medium
CVE-2026-90991
IBM Langflow OSS 1.0.0 through 1.12.4 could allow a remote authenticated attacker to cause a denial of service due to…
6.5
Medium