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vuln-cve/data/2026/41xxx/CVE-2026-41009.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-41009",
"assignerOrgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d",
"state": "PUBLISHED",
"assignerShortName": "vmware",
"dateReserved": "2026-04-16T02:19:16.426Z",
"datePublished": "2026-05-27T06:45:11.124Z",
"dateUpdated": "2026-05-27T13:38:30.294Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d",
"shortName": "vmware",
"dateUpdated": "2026-05-27T06:45:11.124Z"
},
"title": "Local Blobstore may allow arbitrary reads/deletes",
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')",
"cweId": "CWE-22",
"type": "CWE"
}
]
}
],
"impacts": [
{
"descriptions": [
{
"lang": "en",
"value": "Arbitrary file reads and deletes outside the blobstore root on BOSH Director configured with the local blobstore provider."
}
]
}
],
"affected": [
{
"vendor": "Cloud Foundry Foundation",
"product": "BOSH Director",
"versions": [
{
"version": "0",
"lessThan": "282.1.12",
"status": "affected",
"versionType": "custom"
}
],
"defaultStatus": "unaffected"
}
],
"descriptions": [
{
"lang": "en",
"value": "When the director sends a long-running request (e.g. compile_package), the agent's reply JSON is consumed by AgentClient. inject_compile_log (line 332-339) reads response['value']['result']['compile_log_id'] and format_exception (line 318-325) reads exception['blobstore_id']; both pass the agent-supplied string unmodified to download_and_delete_blob(blob_id) (line 344-349), which calls @resource_manager.get_resource(blob_id) and, in an ensure block, @resource_manager.delete_resource(blob_id). Api::ResourceManager forwards the id straight to blobstore.get(id) / blobstore.delete(id). When the director is configured with the local blobstore provider, Blobstore::LocalClient#object_file_path(oid) is File.join(@blobstore_path, oid) (local_client.rb:54-56) with no normalisation, so oid = \"../../jobs/director/config/director.yml\" resolves outside the blobstore root.\n\nAffected versions:\nBOSH Director: All versions prior to v282.1.12",
"supportingMedia": [
{
"type": "text/html",
"base64": false,
"value": "When the director sends a long-running request (e.g. compile_package), the agent's reply JSON is consumed by AgentClient. inject_compile_log (line 332-339) reads response[&#39;value&#39;][&#39;result&#39;][&#39;compile_log_id&#39;] and format_exception (line 318-325) reads exception[&#39;blobstore_id&#39;]; both pass the agent-supplied string unmodified to download_and_delete_blob(blob_id) (line 344-349), which calls @resource_manager.get_resource(blob_id) and, in an ensure block, @resource_manager.delete_resource(blob_id). Api::ResourceManager forwards the id straight to blobstore.get(id) / blobstore.delete(id). When the director is configured with the local blobstore provider, Blobstore::LocalClient#object_file_path(oid) is File.join(@blobstore_path, oid) (local_client.rb:54-56) with no normalisation, so oid = &quot;../../jobs/director/config/director.yml&quot; resolves outside the blobstore root.<br><br>Affected versions:<br>BOSH Director: All versions prior to v282.1.12"
}
]
}
],
"references": [
{
"url": "https://www.cloudfoundry.org/blog/cve-2026-41009-local-blobstore-may-allow-arbitrary-reads-deletes/"
}
],
"metrics": [
{
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
],
"cvssV3_1": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:N/I:H/A:L",
"attackVector": "LOCAL",
"attackComplexity": "HIGH",
"privilegesRequired": "HIGH",
"userInteraction": "REQUIRED",
"scope": "CHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"availabilityImpact": "LOW",
"baseScore": 5.8,
"baseSeverity": "MEDIUM"
},
"cvssV4_0": {
"version": "4.0",
"vectorString": "CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:P/VC:N/VI:H/VA:L/SC:N/SI:N/SA:L",
"attackVector": "LOCAL",
"attackComplexity": "HIGH",
"attackRequirements": "PRESENT",
"privilegesRequired": "HIGH",
"userInteraction": "PASSIVE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "HIGH",
"vulnAvailabilityImpact": "LOW",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "LOW",
"exploitMaturity": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED",
"baseScore": 4.3,
"baseSeverity": "MEDIUM"
}
}
],
"source": {
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-05-27T13:38:21.285236Z",
"id": "CVE-2026-41009",
"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": "2026-05-27T13:38:30.294Z"
}
}
]
}
}