medium6.9
CVE-2026-57442
MCPVault: PathFilter restricted directories (.git/.obsidian/node_modules) only denied at vault root, not nested
Impact
MCPVault is a lightweight Model Context Protocol server for safe access to files in an Obsidian vault. Prior to 0.11.5, PathFilter in src/pathfilter.ts uses root-anchored deny-list patterns, so nested .git, .obsidian, and node_modules path segments do not match the restriction and pass both isAllowed() and isAllowedForListing(). An attacker who influences a path selected by an AI agent can traverse nested repository or Obsidian metadata, read remote URLs or embedded tokens, or cause nested node_modules content to pollute the listAllTags index. This issue is fixed in version 0.11.5.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @bitbonsai/mcpvault | < 0.11.5 | 0.11.5 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-9c83-rr99-vfwj
- https://github.com/bitbonsai/mcpvault/security/advisories/GHSA-9c83-rr99-vfwj
- https://github.com/bitbonsai/mcpvault/commit/0adb43901e1a08e85e14b42a8df2442fabc0b64a
- https://github.com/bitbonsai/mcpvault/commit/8795716b90d1c4090a82a58647e030763513f17e
- https://github.com/bitbonsai/mcpvault/issues/128