{"id":"CVE-2026-57442","aliases":["EUVD-2026-79126","GHSA-9c83-rr99-vfwj"],"status":"published","title":"MCPVault: PathFilter restricted directories (.git/.obsidian/node_modules) only denied at vault root, not nested","description":"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.","severity":{"version":"4.0","score":6.9,"vector":"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00192,"percentile":0.08898,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-22","CWE-538"],"published":"2026-06-19T21:42:24Z","modified":"2026-10-28T02:30:29Z","fixes":[{"ecosystem":"npm","package":"@bitbonsai/mcpvault","fixed_in":["0.11.5"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"@bitbonsai/mcpvault","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.11.5"}]}]},{"source":"osv","ecosystem":"npm","package":"@bitbonsai/mcpvault","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.11.5"}]}]}],"products":[{"vendor":"bitbonsai","product":"mcpvault"}],"references":[{"url":"https://github.com/bitbonsai/mcpvault/security/advisories/GHSA-9c83-rr99-vfwj","tags":["x_refsource_CONFIRM","advisory","web"]},{"url":"https://github.com/bitbonsai/mcpvault/issues/128","tags":["x_refsource_MISC","exploit","report"]},{"url":"https://github.com/bitbonsai/mcpvault/commit/0adb43901e1a08e85e14b42a8df2442fabc0b64a","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/bitbonsai/mcpvault/commit/8795716b90d1c4090a82a58647e030763513f17e","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/advisories/GHSA-9c83-rr99-vfwj"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57442.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-57442","tags":["advisory"]},{"url":"https://github.com/bitbonsai/mcpvault","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-57442","title":"MCPVault: PathFilter restricted directories (.git/.obsidian/node_modules) only denied at vault root, not nested","description":"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.","status":"published","published":"2026-09-15T17:50:48.077Z","modified":"2026-09-16T14:01:51.831Z","cvss":[{"version":"4.0","score":6.9,"vector":"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","level":"medium","assessor":"cna"}],"cwes":["CWE-22","CWE-538"],"updated_at":"2026-11-02T13:43:56.024247Z"}],"euvd":[{"id":"EUVD-2026-79126","description":"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.","status":"published","published":"2026-09-15T17:50:48Z","modified":"2026-09-16T14:01:51Z","cvss":[{"version":"4.0","score":6.9,"vector":"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","level":"medium"}],"updated_at":"2026-11-02T17:28:16.201278Z"}],"ghsa":[{"id":"GHSA-9c83-rr99-vfwj","title":"MCPVault: PathFilter restricted directories (.git/.obsidian/node_modules) only denied at vault root, not nested","description":"PathFilter's deny-list glob patterns are anchored, so `.git`, `.obsidian`, and `node_modules` were only blocked at the vault root. Nested copies inside the vault (e.g. `tools/cli/node_modules/...`, `tools/somerepo/.git/config`, a nested `.obsidian/`) were fully traversable via isAllowed/isAllowedForListing. Impact: a nested `.git/config` (remote URLs / embedded tokens) and nested `.obsidian` contents could be read, under the same prompt-injection threat model as GHSA-j99q-93c9-h869 (an attacker influences the path an agent reads). It also caused nested `node_modules` to pollute the tag index (#128, the public symptom). Fixed in 0.11.5 by denying these restricted names at any path depth (matched case-insensitively as any path segment).","status":"published","published":"2026-06-19T21:42:24Z","modified":"2026-07-20T21:31:22Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-22","CWE-538"],"updated_at":"2026-11-02T14:40:48.410776Z"}],"nvd":[{"id":"CVE-2026-57442","description":"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.","status":"published","published":"2026-09-15T18:17:25.613Z","modified":"2026-09-30T17:51:56.193Z","cvss":[{"version":"4.0","score":6.9,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"}],"cwes":["CWE-22","CWE-538"],"updated_at":"2026-11-02T14:12:47.668237Z"}],"osv":[{"id":"CVE-2026-57442","title":"MCPVault: PathFilter restricted directories (.git/.obsidian/node_modules) only denied at vault root, not nested","description":"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.","status":"published","published":"2026-09-15T17:50:48.077Z","modified":"2026-10-28T02:30:29.686478693Z","cvss":[{"version":"4.0","score":6.9,"vector":"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","level":"medium"}],"cwes":["CWE-22","CWE-538"],"updated_at":"2026-11-02T15:45:12.016252Z"},{"id":"GHSA-9c83-rr99-vfwj","title":"MCPVault: PathFilter restricted directories (.git/.obsidian/node_modules) only denied at vault root, not nested","description":"PathFilter's deny-list glob patterns are anchored, so `.git`, `.obsidian`, and `node_modules` were only blocked at the vault root. Nested copies inside the vault (e.g. `tools/cli/node_modules/...`, `tools/somerepo/.git/config`, a nested `.obsidian/`) were fully traversable via isAllowed/isAllowedForListing. Impact: a nested `.git/config` (remote URLs / embedded tokens) and nested `.obsidian` contents could be read, under the same prompt-injection threat model as GHSA-j99q-93c9-h869 (an attacker influences the path an agent reads). It also caused nested `node_modules` to pollute the tag index (#128, the public symptom). Fixed in 0.11.5 by denying these restricted names at any path depth (matched case-insensitively as any path segment).","status":"published","published":"2026-06-19T21:42:24Z","modified":"2026-07-20T21:56:45.025308Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-22","CWE-538"],"updated_at":"2026-11-02T15:46:43.524801Z"}]}}