CVE-2026-40518 — ByteDance DeerFlow Path Traversal and Arbitrary File Write via Bootstrap Mode
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…
Published: 2026-04-17 · CVSS: 7.1 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7