CVE-2026-34430

8.8 HIGH
Published: April 01, 2026 Modified: April 02, 2026
View on NVD

Description

ByteDance Deer-Flow versions prior to commit 92c7a20 containย 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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/bytedance/deer-flow/pull/1547
Source: disclosure@vulncheck.com
Issue Tracking Patch Vendor Advisory
https://www.vulncheck.com/advisories/bytedance-deerflow-localsandboxprovider-host-bash-escape
Source: disclosure@vulncheck.com
Third Party Advisory VDB Entry

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
8.8 / 10.0
EPSS (Exploit Probability)
0.1%
28th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

deerflow