CVE-2026-57441

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Source

https://cve.org/CVERecord?id=CVE-2026-57441

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-57441.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-57441

Aliases

GHSA-j99q-93c9-h869

Published

2026-09-15T17:49:10Z

Modified

2026-09-17T03:46:54Z

Severity

8.4 (High) CVSS_V4 - 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 CVSS Calculator

Summary

MCPVault: PathFilter restricted-directory deny-list bypass via case and trailing dot/space equivalence

Details

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.

Database specific

{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-178",
        "CWE-41"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57441.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "fixed":  "0.11.4"
                }
            ],
            "source":  "AFFECTED_FIELD"
        }
    ]
}

References

Affected packages

Git / github.com/bitbonsai/mcpvault

Affected ranges

Type

GIT

Repo

https://github.com/bitbonsai/mcpvault

Events

Introduced

Fixed

0adb43901e1a08e85e14b42a8df2442fabc0b64a

Fixed

b9ea91a1c6d6adfec3e9e0483d9d79669e927fa8

Database specific

Show details

{
    "source":  "REFERENCES"
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-57441.json"