EUVD-2026-79126
GHSA-9c83-rr99-vfwj
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V5 - File Handling Path canonicalization, traversal prevention
MITRE ATT&CK
2 techniques across 2 tactics: Discovery, Collection The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
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Alert meAnalysisAIv1 – Sep 15, 2026
The MCPVault npm package (a lightweight Model Context Protocol server that gives AI agents access to an Obsidian vault) anchored its restricted-directory deny-list to the vault root in versions before 0.11.5, so nested .git, .obsidian and node_modules directories silently pass both isAllowed() and isAllowedForListing(). An attacker who influences which path an AI agent reads — typically through prompt injection in content the agent ingests — can cause nested .git/config files (remote URLs, embedded tokens) or nested Obsidian metadata to be read, and can pollute the listAllTags index with nested node_modules content. No public exploit code or CISA KEV entry was identified at the time of analysis; the vendor shipped the fix in 0.11.5.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 2 packages in npm, euvd
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
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Severity by source
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
Primary rating from Vendor (GitHub_M) · only source for this CVE.
CVSS VectorVendor: GitHub_M
DescriptionCVE.org
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.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Path traversal exploits occur when applications use user-controlled input to construct file system paths without proper validation.
Exploit-DB