CVE-2026-40518
7.1 HIGHByteDance DeerFlow before commit 2176b2b contains a path traversal and arbitrary file write vulnerability in bootstrap-mode custom-agent ...
Published: 2026-04-17 · Last updated: 2026-06-05
Severity and scoring
- CVSS
- 7.1 HIGH
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
- CWE
- CWE-22
Affected products
| Vendor | Product |
|---|---|
| bytedance | deerflow |
Description
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: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-40518
- [Patch]https://github.com/bytedance/deer-flow/commit/2176b2bbfccfce25ceee08318813f96d843a13fd
- [Patch]https://github.com/bytedance/deer-flow/pull/2274
- [Other]https://www.vulncheck.com/advisories/bytedance-deerflow-path-traversal-and-arbitrary-file-write-via-bootstrap-mode
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