Langflow - RCE (CVE-2026-0768)

CVE-2026-0768 is a critical code injection vulnerability in Langflow that allows unauthenticated remote attackers to execute arbitrary Python code through the validate endpoint. Successful exploitation can enable attackers to compromise affected systems with root-level privileges, potentially resulting in data theft, system modification, and complete loss of confidentiality, integrity, and availability.

CrowdSec has been tracking this vulnerability and its exploits since 17th of September 2026.

CrowdSec network data shows that most actors exploiting CVE-2026-0768 rely on broad, untargeted scans with minimal filtering. The activity is largely automated and opportunistic in nature. Additionally, according to week-over-week analysis by CrowdSec, exploitation of CVE-2026-0768 is surging. Attack volumes are spiking well above historical norms, indicating widespread and escalating interest from threat actors. CVE-2026-0768 is currently experiencing high visibility and active exploitation across the internet.

Attackers target the unauthenticated /api/v1/validate/code endpoint with a JSON code parameter containing Python code-injection payloads. The payload abuses default-argument evaluation to invoke exec() and execute arbitrary operating-system commands on the Langflow server.