CVE-2026-105820

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-105820", "assignerOrgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc", "state": "PUBLISHED", "assignerShortName": "HashiCorp", "dateReserved": "2026-10-05T21:35:14.384Z", "datePublished": "2026-10-07T21:48:08.017Z", "dateUpdated": "2026-10-08T17:06:15.663Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "platforms": ["64 bit", "32 bit", "x86", "ARM", "MacOS", "Windows", "Linux"], "product": "Vault Enterprise", "vendor": "HashiCorp", "versions": [{"changes": [{"at": "1.21.12", "status": "unaffected"}, {"at": "1.20.17", "status": "unaffected"}, {"at": "1.19.23", "status": "unaffected"}], "lessThan": "2.1.2", "status": "affected", "version": "0.0.1", "versionType": "semver"}]}], "credits": [{"lang": "en", "value": "This issue was identified by an external party."}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Vault's ACL policy cache allowed namespace traversal when policy names contained path traversal constructs. This may allow a token assigned specially crafted policy names to use the capabilities of policies defined in other namespaces, including the root namespace. This vulnerability (CVE-2026-105820) is fixed in Vault Enterprise 2.1.2, 1.21.12, 1.20.17, and 1.19.23. Vault Community Edition does not support namespaces, and is not affected.</p><br/>"}], "value": "Vault's ACL policy cache allowed namespace traversal when policy names contained path traversal constructs. This may allow a token assigned specially crafted policy names to use the capabilities of policies defined in other namespaces, including the root namespace. This vulnerability (CVE-2026-105820) is fixed in Vault Enterprise 2.1.2, 1.21.12, 1.20.17, and 1.19.23. Vault Community Edition does not support namespaces, and is not affected."}], "impacts": [{"capecId": "CAPEC-126", "descriptions": [{"lang": "en", "value": "CAPEC-126: Path Traversal"}]}], "metrics": [{"cvssV3_1": {"baseScore": 5.4, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-22", "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (Path Traversal)", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc", "shortName": "HashiCorp", "dateUpdated": "2026-10-07T21:48:08.017Z"}, "references": [{"url": "https://discuss.hashicorp.com/t/hcsec-2026-42-vault-enterprise-acl-policy-cache-vulnerable-to-cross-namespace-policy-resolution/77814"}], "source": {"advisory": "HCSEC-2026-42", "discovery": "EXTERNAL"}, "title": "Vault ACL Policy Cache Vulnerable to Cross-Namespace Policy Resolution"}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-10-08T17:05:54.369098Z", "id": "CVE-2026-105820", "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": "2026-10-08T17:06:15.663Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-105820", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-08T17:05:54.369098Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-08T17:06:06.766Z"}}], "cna": {"title": "Vault ACL Policy Cache Vulnerable to Cross-Namespace Policy Resolution", "source": {"advisory": "HCSEC-2026-42", "discovery": "EXTERNAL"}, "credits": [{"lang": "en", "value": "This issue was identified by an external party."}], "impacts": [{"capecId": "CAPEC-126", "descriptions": [{"lang": "en", "value": "CAPEC-126: Path Traversal"}]}], "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "baseScore": 5.4, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "HashiCorp", "product": "Vault Enterprise", "versions": [{"status": "affected", "changes": [{"at": "1.21.12", "status": "unaffected"}, {"at": "1.20.17", "status": "unaffected"}, {"at": "1.19.23", "status": "unaffected"}], "version": "0.0.1", "lessThan": "2.1.2", "versionType": "semver"}], "platforms": ["64 bit", "32 bit", "x86", "ARM", "MacOS", "Windows", "Linux"], "defaultStatus": "unaffected"}], "references": [{"url": "https://discuss.hashicorp.com/t/hcsec-2026-42-vault-enterprise-acl-policy-cache-vulnerable-to-cross-namespace-policy-resolution/77814"}], "descriptions": [{"lang": "en", "value": "Vault's ACL policy cache allowed namespace traversal when policy names contained path traversal constructs. This may allow a token assigned specially crafted policy names to use the capabilities of policies defined in other namespaces, including the root namespace. This vulnerability (CVE-2026-105820) is fixed in Vault Enterprise 2.1.2, 1.21.12, 1.20.17, and 1.19.23. Vault Community Edition does not support namespaces, and is not affected.", "supportingMedia": [{"type": "text/html", "value": "<p>Vault's ACL policy cache allowed namespace traversal when policy names contained path traversal constructs. This may allow a token assigned specially crafted policy names to use the capabilities of policies defined in other namespaces, including the root namespace. This vulnerability (CVE-2026-105820) is fixed in Vault Enterprise 2.1.2, 1.21.12, 1.20.17, and 1.19.23. Vault Community Edition does not support namespaces, and is not affected.</p><br/>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-22", "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (Path Traversal)"}]}], "providerMetadata": {"orgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc", "shortName": "HashiCorp", "dateUpdated": "2026-10-07T21:48:08.017Z"}}}, "cveMetadata": {"cveId": "CVE-2026-105820", "state": "PUBLISHED", "dateUpdated": "2026-10-08T17:06:15.663Z", "dateReserved": "2026-10-05T21:35:14.384Z", "assignerOrgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc", "datePublished": "2026-10-07T21:48:08.017Z", "assignerShortName": "HashiCorp"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "platforms": ["64 bit", "32 bit", "x86", "ARM", "MacOS", "Windows", "Linux"], "product": "Vault Enterprise", "vendor": "HashiCorp", "versions": [{"changes": [{"at": "1.21.12", "status": "unaffected"}, {"at": "1.20.17", "status": "unaffected"}, {"at": "1.19.23", "status": "unaffected"}], "lessThan": "2.1.2", "status": "affected", "version": "0.0.1", "versionType": "semver"}]}], "source": "security@hashicorp.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Vault's ACL policy cache allowed namespace traversal when policy names contained path traversal constructs. This may allow a token assigned specially crafted policy names to use the capabilities of policies defined in other namespaces, including the root namespace. This vulnerability (CVE-2026-105820) is fixed in Vault Enterprise 2.1.2, 1.21.12, 1.20.17, and 1.19.23. Vault Community Edition does not support namespaces, and is not affected."}], "id": "CVE-2026-105820", "lastModified": "2026-10-08T21:07:57.460", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.5, "source": "security@hashicorp.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-105820", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-08T17:05:54.369098Z", "version": "2.0.3"}}]}, "published": "2026-10-07T22:17:02.990", "references": [{"source": "security@hashicorp.com", "url": "https://discuss.hashicorp.com/t/hcsec-2026-42-vault-enterprise-acl-policy-cache-vulnerable-to-cross-namespace-policy-resolution/77814"}], "sourceIdentifier": "security@hashicorp.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "security@hashicorp.com", "type": "Secondary"}]}

{"bugzilla": {"description": "vault: Vault: Privilege escalation via path traversal in ACL policy cache", "id": "2547736", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2547736"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.4", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N", "status": "draft"}, "cwe": "CWE-22", "details": ["Vault's ACL policy cache allowed namespace traversal when policy names contained path traversal constructs. This may allow a token assigned specially crafted policy names to use the capabilities of policies defined in other namespaces, including the root namespace. This vulnerability (CVE-2026-105820) is fixed in Vault Enterprise 2.1.2, 1.21.12, 1.20.17, and 1.19.23. Vault Community Edition does not support namespaces, and is not affected.", "A flaw was found in Vault. An authenticated user can achieve privilege escalation due to improper path validation within the Access Control List (ACL) policy cache. By utilizing specially crafted policy names containing path traversal constructs, an attacker can bypass tenant boundaries and resolve permissions defined in other namespaces, including the root namespace. This allows unauthorized access to administrative capabilities and sensitive resources across the deployment."], "name": "CVE-2026-105820", "package_state": [{"cpe": "cpe:/a:redhat:openshift_data_foundation:4", "fix_state": "Under investigation", "package_name": "odf4/cephcsi-rhel9", "product_name": "Red Hat Openshift Data Foundation 4"}, {"cpe": "cpe:/a:redhat:openshift_data_foundation:4", "fix_state": "Under investigation", "package_name": "odf4/mcg-cli-rhel9", "product_name": "Red Hat Openshift Data Foundation 4"}, {"cpe": "cpe:/a:redhat:openshift_data_foundation:4", "fix_state": "Under investigation", "package_name": "odf4/mcg-rhel9-operator", "product_name": "Red Hat Openshift Data Foundation 4"}], "public_date": "2026-10-07T21:48:08Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-105820\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-105820\nhttps://discuss.hashicorp.com/t/hcsec-2026-42-vault-enterprise-acl-policy-cache-vulnerable-to-cross-namespace-policy-resolution/77814"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": ["64_bit", "32_bit", "x86", "arm", "macos", "windows", "linux"], "status": "affected", "versions": {"scheme": "semver", "value": "[0.0.1,2.1.2)"}}, {"platform": ["64_bit", "32_bit", "x86", "arm", "macos", "windows", "linux"], "status": "unaffected", "versions": {"scheme": "semver", "value": "1.21.12"}}, {"platform": ["64_bit", "32_bit", "x86", "arm", "macos", "windows", "linux"], "status": "unaffected", "versions": {"scheme": "semver", "value": "1.20.17"}}, {"platform": ["64_bit", "32_bit", "x86", "arm", "macos", "windows", "linux"], "status": "unaffected", "versions": {"scheme": "semver", "value": "1.19.23"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Vault Enterprise", "source": "cna", "vendor": "HashiCorp"}, "product": "vault_enterprise", "vendor": "hashicorp"}], "created": "2026-10-07T23:30:07.196258+00:00", "updated": "2026-10-07T23:30:07.365566+00:00", "vendors": ["hashicorp", "hashicorp$PRODUCT$vault_enterprise"]}