Vulnerability Details CVE-2026-40518
ByteDance DeerFlow before commit 2176b2b contains a path traversal and arbitrary file write vulnerability in bootstrap-mode custom-agent creation where the agent name validation is bypassed. Attackers can supply traversal-style values or absolute paths as the agent name to influence directory creation and write files outside the intended custom-agent directory, potentially achieving arbitrary file write on the system subject to filesystem permissions.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 27.5%
CVSS Severity
CVSS v3 Score 7.1
References