CVE-2026-8505

critical · 9.8

IBM Langflow OSS 1.0.0 through 1.10.0 has a vulnerability in Langflow's webhook authentication logic allows unauthenticated users to trigger the execution of any flow. The system incorrectly bypasses API key validation when the WEBHOOK_AUTH_ENABLE configuration is set to False (which is the default setting). This allows a remote attacker who knows a flow's UUID to execute it as if they were the owner, potentially leading to Remote Code Execution (RCE).

9.8

CVSS

0.6%

EPSS (exploit prob.)

46th

EPSS percentile

2026-07-17

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-306

Affected products

Vendor	Product	Affected versions
langflow	langflow	>= 1.0.0, < 1.10.1
apple	macos	all versions
linux	linux_kernel	all versions
microsoft	windows	all versions

Check a specific version with /api/v1/cve/match.

References

https://www.ibm.com/support/pages/node/7278921

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-8505