CVE-2026-88938 knowns through 0.33.0 Path Traversal via code.find MCP tool
Attackers can read arbitrary files on the host by supplying malicious paths to the code.find MCP tool in knowns.
- 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-2026-88938?
CVE-2026-88938 is a high-severity path traversal vulnerability in knowns-dev knowns, published on 10 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
knowns through 0.33.0 fails to confine the path argument of the code.find MCP tool to the project root, allowing AI agent sessions to read source files anywhere on the host. Attackers can supply absolute paths or relative traversal sequences to the path argument and retrieve full file contents from outside the intended project directory.
Weakness: CWE-22
Which versions are affected by CVE-2026-88938?
How do I fix CVE-2026-88938?
No fix has been published for CVE-2026-88938 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-2026-88938 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-88938 exists.
Sources
Also known as GHSA-5cj9-fcqq-g2h7, GHSA-629c-j52g-h978.