Vulnerability · Published Jan 23, 2026 · Assigned by zdi
CVE-2026-0769Langflow eval_custom_component_code Eval Injection Remote Code Execution Vulnerability
Critical 9.8
In plain English
A critical-severity security flaw in Langflow from Langflow. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 41.2% (higher than 99% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit, public proof-of-concept code.
Official description
Langflow eval_custom_component_code Eval Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is not required to exploit this vulnerability. The specific flaw exists within the implementation of eval_custom_component_code function. The issue results from the lack of proper validation of a user-supplied string before using it to execute python code. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-26972.
Affected products (as reported)
Weakness: CWE-95 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- ZDI-26-035 x_research-advisory