CVE-2026-19331 bazylhorsey obsidian-mcp-server CanvasService.ts writeCanvas path traversal
Local attackers can exploit path traversal in the CanvasService to read or modify arbitrary files within the Obsidian MCP server.
- 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-2026-19331?
CVE-2026-19331 is a medium-severity path traversal vulnerability in bazylhorsey obsidian-mcp-server, published on 9 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability was identified in bazylhorsey obsidian-mcp-server 1.0.0. This affects the function readCanvas/writeCanvas of the file src/services/CanvasService.ts. Such manipulation leads to path traversal. An attack has to be approached locally. The project was informed of the problem early through an issue report but has not responded yet.
Weakness: CWE-22
Which versions are affected by CVE-2026-19331?
How do I fix CVE-2026-19331?
No fix has been published for CVE-2026-19331 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-2026-19331 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19331 exists.
Sources
Also known as GHSA-6p38-w68x-9w82.