CVE-2026-34430 ByteDance DeerFlow LocalSandboxProvider Host Bash Escape
Attackers can escape the sandbox and execute arbitrary commands on the host by bypassing regex validation in the bash tool.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-34430?
CVE-2026-34430 is a high-severity command injection vulnerability in Bytedance Inc. DeerFlow, published on 1 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-184
Which versions are affected by CVE-2026-34430?
It affects 1 product.
Products include Deerflow Deerflow.
How do I fix CVE-2026-34430?
No fix has been published for CVE-2026-34430 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-34430 being exploited?
There is no known exploitation of CVE-2026-34430 in the wild and no public exploit code.
Sources
Also known as GHSA-gxx6-2vwg-3gc3.