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vuln-cve/data/2026/57xxx/CVE-2026-57441.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-57441",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-06-24T13:21:20.729Z",
"datePublished": "2026-09-15T17:49:10.118Z",
"dateUpdated": "2026-09-15T19:43:58.303Z"
},
"containers": {
"cna": {
"title": "MCPVault: PathFilter restricted-directory deny-list bypass via case and trailing dot/space equivalence",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-41",
"lang": "en",
"description": "CWE-41: Improper Resolution of Path Equivalence",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-178",
"lang": "en",
"description": "CWE-178: Improper Handling of Case Sensitivity",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "NONE",
"userInteraction": "PASSIVE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnAvailabilityImpact": "LOW",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"baseScore": 8.4,
"baseSeverity": "HIGH",
"vectorString": "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",
"version": "4.0"
}
}
],
"references": [
{
"name": "https://github.com/bitbonsai/mcpvault/security/advisories/GHSA-j99q-93c9-h869",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/bitbonsai/mcpvault/security/advisories/GHSA-j99q-93c9-h869"
},
{
"name": "https://github.com/bitbonsai/mcpvault/commit/0adb43901e1a08e85e14b42a8df2442fabc0b64a",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/bitbonsai/mcpvault/commit/0adb43901e1a08e85e14b42a8df2442fabc0b64a"
},
{
"name": "https://github.com/bitbonsai/mcpvault/commit/b9ea91a1c6d6adfec3e9e0483d9d79669e927fa8",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/bitbonsai/mcpvault/commit/b9ea91a1c6d6adfec3e9e0483d9d79669e927fa8"
}
],
"affected": [
{
"vendor": "bitbonsai",
"product": "mcpvault",
"versions": [
{
"version": "< 0.11.4",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-09-15T17:49:10.118Z"
},
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"source": {
"advisory": "GHSA-j99q-93c9-h869",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-09-15T18:57:31.418875Z",
"id": "CVE-2026-57441",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-09-15T19:43:58.303Z"
}
}
]
}
}