CVE-2025-55345 Unsafe symlink following in restricted workspace-write sandbox leads to RCE
Attackers can achieve remote code execution and arbitrary file overwrites by exploiting unsafe symlink following in the Codex CLI workspace-write sandbox.
- 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-2025-55345?
CVE-2025-55345 is a high-severity path traversal vulnerability, published on 13 Aug 2025. 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
Using Codex CLI in workspace-write mode inside a malicious context (repo, directory, etc) could lead to arbitrary file overwrite and potentially remote code execution due to symlinks being followed outside the allowed current working directory.
Weakness: CWE-61
Which versions are affected by CVE-2025-55345?
How do I fix CVE-2025-55345?
No fix has been published for CVE-2025-55345 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-2025-55345 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-55345 exists.
Sources
Also known as GHSA-698g-97rr-xgjf.