{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-5052", "assignerOrgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc", "state": "PUBLISHED", "assignerShortName": "HashiCorp", "dateReserved": "2026-03-27T17:50:20.727Z", "datePublished": "2026-04-17T02:55:25.080Z", "dateUpdated": "2026-04-17T17:57:55.377Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "platforms": ["64 bit", "32 bit", "x86", "ARM", "MacOS", "Windows", "Linux"], "product": "Vault", "repo": "https://github.com/hashicorp/vault", "vendor": "HashiCorp", "versions": [{"lessThan": "2.0.0", "status": "affected", "version": "1.15.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "platforms": ["64 bit", "32 bit", "x86", "ARM", "MacOS", "Windows", "Linux"], "product": "Vault Enterprise", "repo": "https://github.com/hashicorp/vault", "vendor": "HashiCorp", "versions": [{"changes": [{"at": "1.19.16", "status": "unaffected"}, {"at": "1.20.10", "status": "unaffected"}, {"at": "1.21.5", "status": "unaffected"}], "lessThan": "2.0.0", "status": "affected", "version": "1.15.0", "versionType": "semver"}]}], "credits": [{"lang": "en", "value": "This issue was independently identified and reported by Oleh Konko of 1seal, as well as Vipin Chaudhary."}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Vault\u2019s PKI engine\u2019s ACME validation did not reject local targets when issuing http-01 and tls-alpn-01 challenges. This may lead to these requests being sent to local network targets, potentially leading to information disclosure. Fixed in Vault Community Edition 2.0.0 and Vault Enterprise 2.0.0, 1.21.5, 1.20.10, and 1.19.16.</p><br/>"}], "value": "Vault\u2019s PKI engine\u2019s ACME validation did not reject local targets when issuing http-01 and tls-alpn-01 challenges. This may lead to these requests being sent to local network targets, potentially leading to information disclosure. Fixed in Vault Community Edition 2.0.0 and Vault Enterprise 2.0.0, 1.21.5, 1.20.10, and 1.19.16."}], "impacts": [{"capecId": "CAPEC-118", "descriptions": [{"lang": "en", "value": "CAPEC-118: Collect and Analyze Information"}]}], "metrics": [{"cvssV3_1": {"baseScore": 5.3, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-918", "description": "CWE-918: Server-Side Request Forgery (SSRF)", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc", "shortName": "HashiCorp", "dateUpdated": "2026-04-17T17:57:55.377Z"}, "references": [{"url": "https://discuss.hashicorp.com/t/hcsec-2026-06-vault-vulnerable-to-server-side-request-forgery-in-acme-challenge-validation-via-attacker-controlled-dns/77343"}], "source": {"advisory": "HCSEC-2026-06", "discovery": "EXTERNAL"}, "title": "Vault Vulnerable to Server-Side Request Forgery in ACME Challenge Validation via Attacker-Controlled DNS"}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-04-17T13:19:57.168697Z", "id": "CVE-2026-5052", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"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": "2026-04-17T13:20:07.590Z"}}]}}

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{"bugzilla": {"description": "Vault: Vault: Information disclosure via Server-Side Request Forgery in ACME challenge validation", "id": "2459106", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2459106"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N", "status": "draft"}, "cwe": "CWE-918", "details": ["A flaw was found in Vault\u2019s PKI engine. The ACME (Automated Certificate Management Environment) validation process did not properly restrict requests to local network targets when handling http-01 and tls-alpn-01 challenges. This vulnerability, known as Server-Side Request Forgery (SSRF), could allow a remote attacker to send crafted ACME validation challenges, potentially leading to the disclosure of sensitive information from internal network resources."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2026-5052", "package_state": [{"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift4/ose-baremetal-installer-rhel9", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift4/ose-installer-rhel9", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift_data_foundation:4", "fix_state": "Fix deferred", "package_name": "cephcsi-rhel8", "product_name": "Red Hat Openshift Data Foundation 4"}, {"cpe": "cpe:/a:redhat:openshift_data_foundation:4", "fix_state": "Fix deferred", "package_name": "cephcsi-rhel9", "product_name": "Red Hat Openshift Data Foundation 4"}, {"cpe": "cpe:/a:redhat:openshift_data_foundation:4", "fix_state": "Fix deferred", "package_name": "mcg-cli-rhel9", "product_name": "Red Hat Openshift Data Foundation 4"}, {"cpe": "cpe:/a:redhat:openshift_data_foundation:4", "fix_state": "Fix deferred", "package_name": "mcg-rhel8-operator", "product_name": "Red Hat Openshift Data Foundation 4"}, {"cpe": "cpe:/a:redhat:openshift_data_foundation:4", "fix_state": "Fix deferred", "package_name": "mcg-rhel9-operator", "product_name": "Red Hat Openshift Data Foundation 4"}, {"cpe": "cpe:/a:redhat:openshift_data_foundation:4", "fix_state": "Fix deferred", "package_name": "ocs4/cephcsi-rhel8", "product_name": "Red Hat Openshift Data Foundation 4"}, {"cpe": "cpe:/a:redhat:openshift_data_foundation:4", "fix_state": "Fix deferred", "package_name": "odf4/cephcsi-rhel8", "product_name": "Red Hat Openshift Data Foundation 4"}, {"cpe": "cpe:/a:redhat:openshift_data_foundation:4", "fix_state": "Fix deferred", "package_name": "odf4/cephcsi-rhel9", "product_name": "Red Hat Openshift Data Foundation 4"}, {"cpe": "cpe:/a:redhat:openshift_data_foundation:4", "fix_state": "Fix deferred", "package_name": "odf4/mcg-cli-rhel9", "product_name": "Red Hat Openshift Data Foundation 4"}, {"cpe": "cpe:/a:redhat:openshift_data_foundation:4", "fix_state": "Fix deferred", "package_name": "odf4/mcg-rhel8-operator", "product_name": "Red Hat Openshift Data Foundation 4"}, {"cpe": "cpe:/a:redhat:openshift_data_foundation:4", "fix_state": "Fix deferred", "package_name": "odf4/mcg-rhel9-operator", "product_name": "Red Hat Openshift Data Foundation 4"}], "public_date": "2026-04-17T02:55:25Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-5052\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-5052\nhttps://discuss.hashicorp.com/t/hcsec-2026-06-vault-vulnerable-to-server-side-request-forgery-in-acme-challenge-validation-via-attacker-controlled-dns/77343"], "threat_severity": "Moderate"}