Paper/Archive/CVE-2026-34430

CVE-2026-34430

Bytedance Inc. DeerFlow — ByteDance DeerFlow LocalSandboxProvider Host Bash Escape

Description · from the CVE record

ByteDance DeerFlow 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.

Affected

ProductAffectedFixed inSource
DeerFlow< 92c7a20cb74addc3038d2131da78f2e239ef542e92c7a20cb74addc3038d2131da78f2e239ef542eCNA

Scores by source

NVD9.6CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
VulnCheck (CNA)8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
VulnCheck (CNA)8.6CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refgithub.com/bytedance/deer-flow/pull/1547patchgithub.com/bytedance/deer-flow/commit/92c7a20cb74addc3038d2131da78f2e239ef542ewriteupvulncheck.com/advisories/bytedance-deerflow-localsandboxprovider-host-bash-escape