{"id":"CVE-2026-57442","summary":"MCPVault: PathFilter restricted directories (.git/.obsidian/node_modules) only denied at vault root, not nested","details":"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.","aliases":["GHSA-9c83-rr99-vfwj"],"modified":"2026-09-18T03:30:18.528053925Z","published":"2026-09-15T17:50:48.077Z","database_specific":{"unresolved_ranges":[{"extracted_events":[{"fixed":"0.11.5"}],"source":"AFFECTED_FIELD"}],"cna_assigner":"GitHub_M","cwe_ids":["CWE-22","CWE-538"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57442.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57442.json"},{"type":"ADVISORY","url":"https://github.com/bitbonsai/mcpvault/security/advisories/GHSA-9c83-rr99-vfwj"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-57442"},{"type":"REPORT","url":"https://github.com/bitbonsai/mcpvault/issues/128"},{"type":"FIX","url":"https://github.com/bitbonsai/mcpvault/commit/0adb43901e1a08e85e14b42a8df2442fabc0b64a"},{"type":"FIX","url":"https://github.com/bitbonsai/mcpvault/commit/8795716b90d1c4090a82a58647e030763513f17e"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/bitbonsai/mcpvault","events":[{"introduced":"0"},{"fixed":"0adb43901e1a08e85e14b42a8df2442fabc0b64a"},{"fixed":"8795716b90d1c4090a82a58647e030763513f17e"}],"database_specific":{"source":"REFERENCES"}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-57442.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}