{"cve":"CVE-2026-57441","nvd":{"published":"2026-09-15T18:17:25.467","modified":"2026-09-30T17:51:56.193","status":"Deferred","description":"MCPVault is a lightweight Model Context Protocol server for safe access to files in an Obsidian vault. Prior to 0.11.4, PathFilter in src/pathfilter.ts compiles restricted-directory patterns case-sensitively and compares paths without canonicalizing filesystem-equivalent segment names. On case-insensitive macOS and Windows filesystems, case variants of .git, .obsidian, or node_modules pass both isAllowed() and isAllowedForListing() even though the operating system opens the restricted directory, and Windows trailing dots or spaces provide the same bypass. An attacker who influences a path selected by an AI agent can use the bypass in read, write, move, search, or listing operations to expose or modify sensitive repository and Obsidian metadata. Vault-root .. containment is not affected. This issue is fixed in version 0.11.4.","cvss_v4":{"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N","score":8.4},"cvss_v3":null,"cwes":["CWE-41","CWE-178"],"references":["https://github.com/bitbonsai/mcpvault/commit/0adb43901e1a08e85e14b42a8df2442fabc0b64a","https://github.com/bitbonsai/mcpvault/commit/b9ea91a1c6d6adfec3e9e0483d9d79669e927fa8","https://github.com/bitbonsai/mcpvault/security/advisories/GHSA-j99q-93c9-h869"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:54:41.405518556+00:00"},"epss":{"cve":"CVE-2026-57441","score":0.00202,"percentile":0.09952,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-j99q-93c9-h869","url":"https://osv.dev/vulnerability/GHSA-j99q-93c9-h869","summary":"MCPVault: PathFilter restricted-directory deny-list bypass via case and trailing dot/space equivalence","modified":"2026-07-20T21:56:44.800003Z","packages":[{"ecosystem":"npm","name":"@bitbonsai/mcpvault","purl":"pkg:npm/%40bitbonsai/mcpvault","ranges":["<0.11.4"],"fixed":["0.11.4"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}