CVE-2026-108759 mistral.rs 0.9.0 through 0.9.4 Sandbox Escape via Symlink Following in mistralrs-code-exec
Attackers can escape the code execution sandbox to read or overwrite arbitrary files via symlink manipulation in mistral.rs.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-108759?
CVE-2026-108759 is a high-severity path traversal vulnerability in EricLBuehler mistral.rs, published on 11 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
mistral.rs 0.9.0 through 0.9.4 contains a link following vulnerability in mistralrs-code-exec that allows sandboxed shell code to read and overwrite files outside the sandbox via symlinks. Attackers or prompt-injected agents can name symlinks as outputs or reuse sessions with symlinked input paths to access files with the server process's permissions.
Weakness: CWE-59
Which versions are affected by CVE-2026-108759?
How do I fix CVE-2026-108759?
No fix has been published for CVE-2026-108759 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-108759 being exploited?
There is no known exploitation of CVE-2026-108759 in the wild and no public exploit code.
Sources
Also known as GHSA-fjjm-5mgr-r8vp.