CVE-2026-14699 zcaceres markdownify-mcp Markdownify.ts assertPathAllowed symlink
Local attackers can bypass path restrictions via symlink following in the markdownify-mcp library, potentially reading or modifying unauthorized files.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-14699?
CVE-2026-14699 is a medium-severity path traversal vulnerability in zcaceres markdownify-mcp, published on 5 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A weakness has been identified in zcaceres markdownify-mcp up to 1.1.0. The affected element is the function assertPathAllowed of the file src/Markdownify.ts. Executing a manipulation can lead to symlink following. The attack can only be executed locally. The pull request to fix this issue awaits acceptance.
Which versions are affected by CVE-2026-14699?
How do I fix CVE-2026-14699?
No fix has been published for CVE-2026-14699 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-2026-14699 being exploited?
There is no known exploitation of CVE-2026-14699 in the wild and no public exploit code.
Sources
Also known as GHSA-mf9r-r6pc-8fc6.