{"id":"CVE-2026-57441","revision":"74318c425fae4b329648c73e8f528b4e","records":[{"revision":"74318c425fae4b329648c73e8f528b4e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-57441","aliases":[],"title":"MCPVault: PathFilter restricted-directory deny-list bypass via case and trailing dot/space equivalence","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.","state":0,"publishedAt":"2026-09-15T17:49:10.118+00:00","modifiedAt":"2026-09-15T19:43:58.303+00:00","affected":[{"ecosystem":"Vendor product","name":"mcpvault","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"bitbonsai\",\n                    \"product\": \"mcpvault\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 0.11.4\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","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,"severity":"HIGH"}],"references":["https://github.com/bitbonsai/mcpvault/security/advisories/GHSA-j99q-93c9-h869","https://github.com/bitbonsai/mcpvault/commit/0adb43901e1a08e85e14b42a8df2442fabc0b64a","https://github.com/bitbonsai/mcpvault/commit/b9ea91a1c6d6adfec3e9e0483d9d79669e927fa8"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-57441","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-57441","identifiers":["CVE-2026-57441"]},"retained":false,"historicalAffected":[]}],"coverage":[]}