Langflow RCE under active attack months after a patch was shipped
Summary
Enterprises using the open-source AI orchestration platform Langflow are urged to patch a high-severity path traversal flaw that allows attackers to write files to arbitrary locations and potentially achieve remote code execution. This vulnerability, CVE-2026-5027, is being actively exploited despite a patch being available for months, and approximately 7,000 Langflow instances are exposed to the internet.
IFF Assessment
The active exploitation of a critical vulnerability in a popular AI platform poses a significant threat to organizations.
Severity
Defender Context
Defenders should prioritize patching the CVE-2026-5027 vulnerability in Langflow deployments. The active exploitation and ease of attack, especially with auto-login enabled, make this a critical risk, highlighting the need for prompt patching and monitoring for indicators of compromise related to arbitrary file writes and RCE.