CVE-2026-100419 gitoxide gix-fs before 0.23.0 Worktree Escape via Symlink
Attackers can escape worktree directories via symlink manipulation during forced checkout, enabling arbitrary file writes and potential code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-100419?
CVE-2026-100419 is a high-severity path traversal vulnerability in GitoxideLabs gitoxide, published on 25 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
gitoxide gix-fs before 0.23.0 contains a path validation bypass vulnerability in the worktree checkout mechanism that allows attackers to escape the worktree directory via symlink manipulation. During forced checkout with overwrite_existing enabled, attackers can craft malicious repository trees where symlink entries replace validated directories, causing subsequent files to be written outside the worktree through the symlink for code execution or file manipulation.
Weakness: CWE-59
Which versions are affected by CVE-2026-100419?
How do I fix CVE-2026-100419?
Upgrade to a fixed version.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-100419 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-100419 exists.
Sources
Also known as AZL-105332, AZL-105335, DEBIAN-CVE-2026-100419, GHSA-jjhr-hr59-47h4, UBUNTU-CVE-2026-100419.