CVE-2026-0770

Threat actors are actively exploiting a critical unauthenticated remote code execution vulnerability, CVE-2026-0768, in Langflow, an open-source AI application framework, to steal sensitive credentials including OpenAI and AWS API keys. The flaw exists in the code validator of Langflow's custom component editor, allowing arbitrary Python code execution with root privileges. Attack activity has been observed on honeypots, primarily originating from Russia, with over 360 exploitation attempts detected. Attackers query environment variables and sensitive files to harvest credentials and maintain persistence.

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has warned federal agencies of active exploitation of three critical vulnerabilities in IBM Langflow, N-able N-central, and Apache Tomcat. The Langflow flaw (CVE-2026-9198) allows unauthenticated remote code execution by chaining API endpoints, with proof-of-concept exploits publicly available. A second Langflow vulnerability (CVE-2026-0770) is also being exploited for root-level remote code execution. The N-central vulnerability (CVE-2026-18576) enables attackers to hijack administrative accounts without authentication, despite prior patching attempts. The Apache Tomcat flaw (CVE-2026-34486), stemming from an incomplete fix for a prior encryption issue, is being exploited by a Chinese-speaking threat actor to deploy reverse shells. CISA has added all three CVEs to its Known Exploited Vulnerabilities catalog and mandated mitigation within three days.

Hackers are actively exploiting a high-severity unauthenticated path traversal vulnerability, CVE-2026-29059, in the open-source developer platform Windmill. The flaw exists in the 'get_log_file' endpoint, allowing attackers to read arbitrary files on the server by manipulating the filename parameter. A key target is the /proc/1/environ file to extract the SUPERADMIN_SECRET environment variable, which can enable superadmin authentication and arbitrary code execution if set. The vulnerability has been patched in Windmill 1.603.3, but exploitation attempts continue against exposed instances.

The Cybersecurity and Infrastructure Security Agency (CISA) has mandated U.S. federal agencies to urgently patch CVE-2026-0770, a critical remote code execution vulnerability in the Langflow AI framework. This flaw allows unauthenticated attackers to execute code as root via improper handling of the exec_globals parameter in the validate endpoint. Exploitation has been observed in the wild since June 27, with attacks focused on command execution, reconnaissance, and attempts to exfiltrate AWS credentials and environment variables.

CISA has added four actively exploited vulnerabilities in Adobe ColdFusion, Joomla Page Builder, and Langflow to its Known Exploited Vulnerabilities (KEV) catalog. Exploitation of these flaws, including path traversal and improper access control, has been observed in the wild, leading to remote code execution and unauthorized access. Attackers have deployed web shells and targeted AI orchestration platforms to steal credentials, with activity linked to opportunistic, financially motivated campaigns. Federal agencies are urged to patch by July 10, 2026.