CVE-2026-19295
IBM Langflow OSS 1.0.0 through 1.11.1 allows an authenticated attacker to execute arbitrary operating system commands in the server process by saving a flow with a crafted type field value and triggering a build of a wrapper flow that references it. This allowed privilege escalation from "authenticated flow user" to arbitrary OS-level command execution under the server process identity, bypassing the LANGFLOW_ALLOW_CUSTOM_COMPONENTS=false policy control.
- Published Aug 28, 2026
- CVSS 9.9 critical
- 3.3% chance of exploitation in the next 30 days (EPSS)
- A Metasploit module exploits it