Home

Description

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.

PUBLISHED Reserved 2026-03-27 | Published 2026-04-01 | Updated 2026-05-12 | Assigner VulnCheck




HIGH: 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

HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Problem types

CWE-184 Incomplete List of Disallowed Inputs

Product status

Default status
unaffected

Any version before 92c7a20cb74addc3038d2131da78f2e239ef542e
affected

Credits

Chia Min Jun Lennon finder

References

github.com/bytedance/deer-flow/pull/1547 issue-tracking

github.com/...ommit/92c7a20cb74addc3038d2131da78f2e239ef542e patch

www.vulncheck.com/...w-localsandboxprovider-host-bash-escape third-party-advisory

cve.org (CVE-2026-34430)

nvd.nist.gov (CVE-2026-34430)

Download JSON