Medium 6.9Published Sep 15, 2026

CVE-2026-57442MCPVault: PathFilter restricted directories (.git/.obsidian/node_modules) only denied at vault root, not nested

Updated under an hour ago (2026-10-19 06:10 UTC)

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It affects bitbonsai mcpvault. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for bitbonsai mcpvault

Exploited in the last 30 days

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.

CVSS: 6.9 MEDIUM (v4.0, CNA)CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Weakness (CWE): CWE-22, CWE-538
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Sep 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

bitbonsai mcpvault bitbonsai:mcpvault (from the name)	before 0.11.5	CNA record

References

https://github.com/bitbonsai/mcpvault/security/advisories/GHSA-9c83-rr99-vfwjx-refsource-confirm
https://github.com/bitbonsai/mcpvault/issues/128x-refsource-misc
https://github.com/bitbonsai/mcpvault/commit/0adb43901e1a08e85e14b42a8df2442fabc0b64ax-refsource-misc
https://github.com/bitbonsai/mcpvault/commit/8795716b90d1c4090a82a58647e030763513f17ex-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.