Langflow Remote Code Execution Vulnerability CVE-2026-0770 Added to CISA KEV

## Overview CISA added CVE-2026-0770 to its Known Exploited Vulnerabilities (KEV) catalog on July 21, 2026. This vulnerability affects Langflow and allows remote attackers to execute arbitrary code without authentication. The addition to the KEV list indicates a federal deadline for remediation, emphasizing the urgency of addressing this issue. ## Technical Details The vulnerability lies in the handling of the `exec_globals` parameter at the validate endpoint. It stems from the inclusion of a resource from an untrusted control sphere. This flaw enables attackers to manipulate the parameter, leading to remote code execution. The vulnerability has a CVSS score of 9.8, indicating a critical severity level. Attackers can exploit this flaw to execute code with root privileges, making it particularly dangerous for affected installations. ## Impact Successful exploitation of CVE-2026-0770 can lead to complete system compromise. Attackers can execute arbitrary code, potentially gaining control over the entire application and its data. This can result in data breaches, unauthorized access, and further exploitation of the underlying infrastructure. Given the lack of authentication requirements, the risk of exploitation is significantly heightened. ## Mitigation Defenders should prioritize patching affected Langflow installations to mitigate this vulnerability. Ensure that the latest security updates from Langflow are applied immediately. Additionally, monitor network traffic for any suspicious activity related to the validate endpoint. Implementing strict access controls and regular security audits can further help in reducing the risk of exploitation.