🚨 CVE-2026-9138
IBM Langflow OSS 1.0.0 through 1.11.2 Langflow could allow an authenticated attacker to write arbitrary files to the server due to improper input validation in the SaveToFileComponent. The application constructs local file paths using attacker‑controlled input without sufficient sanitization when handling requests to the /api/v1/run/{flow_id} endpoint. An attacker with low‑privileged authenticated access (such as a valid API key or user session) can supply crafted path values, including absolute paths or path traversal sequences, allowing arbitrary file writes to locations writable by the Langflow process. Successful exploitation may lead to unauthorized file creation or modification, potentially resulting in further compromise depending on the deployment environment.
🎖@cveNotify
Ibm
Security Bulletin: Langflow is vulnerable to arbitrary file write and arbitrary file deletion due to unvalidated paths in file…
Langflow contains two authenticated vulnerabilities that allow an attacker to write or delete arbitrary files on the server filesystem accessible to the Langflow process identity. The SaveToFileComponent constructs file paths directly from the attacker-controlled…
September 4, 2026 30
