{"id":"CVE-2026-57442","title":"MCPVault is a lightweight Model Context Protocol server for safe access to files in an Obsidian vault","summary":"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 pa…","severity":"medium","cvss":6.9,"cvssVector":"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","cwe":["CWE-22","CWE-538"],"vendor":"bitbonsai","product":"mcpvault","affected":["mcpvault < 0.11.5"],"published":"2026-09-15","updated":"2026-09-16","sourceUpdated":"2026-09-16T15:17:38.487","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-57442","references":[{"url":"https://github.com/bitbonsai/mcpvault/commit/0adb43901e1a08e85e14b42a8df2442fabc0b64a","label":"security-advisories@github.com"},{"url":"https://github.com/bitbonsai/mcpvault/commit/8795716b90d1c4090a82a58647e030763513f17e","label":"security-advisories@github.com"},{"url":"https://github.com/bitbonsai/mcpvault/issues/128","label":"security-advisories@github.com"},{"url":"https://github.com/bitbonsai/mcpvault/security/advisories/GHSA-9c83-rr99-vfwj","label":"security-advisories@github.com"},{"url":"https://github.com/bitbonsai/mcpvault/issues/128","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-16T14:01:44.030897Z"},"cvssSource":"cna","ingestedAt":"2026-09-15T18:41:59.142Z","epss":0.00166,"epssPercentile":0.06217,"slug":"CVE-2026-57442","body":"## Overview\n\nMCPVault 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":50,"depthScoreParts":{"impact":38,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":205314,"id":"CVE-2026-57442","ts":1789570708250,"field":"exploit_available","old":"false","new":"true"}]}