CVE-2026-34430

Description

ByteDance Deer-Flow versions prior to commit 92c7a20 contain a sandbox escape vulnerability in bash tool handling that allows attackers to execute arbitrary commands on the host system by bypassing regex-based validation using shell features such as directory changes and relative paths. Attackers can exploit the incomplete shell semantics modeling to read and modify files outside the sandbox boundary and achieve arbitrary command execution through subprocess invocation with shell interpretation enabled.

References

https://www.vulncheck.com/advisories/bytedance-deerflow-localsandboxprovider-host-bash-escape

https://github.com/bytedance/deer-flow/pull/1547

https://github.com/bytedance/deer-flow/commit/92c7a20cb74addc3038d2131da78f2e239ef542e

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4