ByteDance DeerFlow LocalSandboxProvider Host Bash Escape
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Active
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-34430
- 2026-10-03 Alias added: GHSA-gxx6-2vwg-3gc3
- 2026-10-25 EPSS moved to the below the 50th percentile
- 2026-10-25 Priority changed: MEDIUM → LOW
References
More ByteDance vulnerabilities
- TI-2026-29265 ByteDance DeerFlow Path Traversal and Arbitrary File Write via Bootstrap Mode CVSS 4.0HIGH 7.1
- TI-2026-06033 ByteDance verl grader.py math_equal sandbox CVSS 4.0MEDIUM 6.3
- TI-2026-63838 ByteDance Coze Scraper Extension External Message index.js chrome.runtime.onMessageExternal.addListener authorization CVSS 4.0MEDIUM 5.3
- TI-2026-06147 ByteDance coze-studio databaseTool database_impl.go ExecuteSQL sql injection CVSS 4.0MEDIUM 5.3
- TI-2026-09770 bytedance InfiniStore KV Map infinistore.h purge_kv_map algorithmic complexity CVSS 4.0MEDIUM 4.8
- TI-2026-56382 Missing authentication in ByteDance UI-TARS-desktop CVSS 4.0CRITICAL 10.0
Sources
- CVE-2026-34430 · CVE Program
- CVE-2026-34430 · NVD
- FIRST EPSS
- GHSA-gxx6-2vwg-3gc3 · GitHub Advisory Database · CC BY 4.0
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