PT-2026-29522 · Bytedance · Deer-Flow

Published 2026-04-01 · Updated 2026-04-01 · CVE-2026-34430

NVD

CVSS v4.0

8.6

High

AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

Fix

Incomplete List of Disallowed Inputs

Weakness Enumeration

CWE-184

Related Identifiers

CVE-2026-34430

Affected Products

Deer-Flow

References · 4

• https://github.com/bytedance/deer-flow/commit/92c7a20cb74addc3038d2131da78f2e239ef542e · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-34430 · Security Note
• https://vulncheck.com/advisories/bytedance-deerflow-localsandboxprovider-host-bash-escape · Note
• https://github.com/bytedance/deer-flow/pull/1547 · Note