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.

CVSS v3.1

9.9 CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS

0.96% chance of exploitation in the next 30 days, 59th percentile

Published

2026-08-28

Updated

2026-09-01

Proof-of-concept exploits (1)

• rmhowe425/POC-CVE-2026-192950★ · 2026-08-29

References

• CVE Record
• NVD entry

Related

• CVE-2026-18729
• CVE-2026-19286
• CVE-2026-9198
• CVE-2026-19341
• CVE-2026-19268
• CVE-2026-19342