CVE-2021-37936

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{"affected": [{"affectedData": [{"product": "Kibana", "vendor": "Elastic", "versions": [{"status": "affected", "version": "versions before 7.14.1"}]}], "source": "security@elastic.co"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*", "matchCriteriaId": "8B73691E-6E6F-45F2-8C0C-E32CFBAD3CBB", "versionEndExcluding": "7.14.1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "It was discovered that Kibana was not sanitizing document fields containing HTML snippets. Using this vulnerability, an attacker with the ability to write documents to an elasticsearch index could inject HTML. When the Discover app highlighted a search term containing the HTML, it would be rendered for the user."}, {"lang": "es", "value": "Se descubri\u00f3 que Kibana no estaba sanitizando los campos de documentos que conten\u00edan fragmentos de HTML. Utilizando esta vulnerabilidad, un atacante con la capacidad de escribir documentos en un \u00edndice de elasticsearch podr\u00eda inyectar HTML. Cuando la aplicaci\u00f3n Discover resaltaba un t\u00e9rmino de b\u00fasqueda que conten\u00eda HTML, se mostraba al usuario."}], "id": "CVE-2021-37936", "lastModified": "2026-06-17T04:01:16.953", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 2.7, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 2.7, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-37936", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-04-29T14:41:25.625879Z", "version": "2.0.3"}}]}, "published": "2022-11-18T23:15:19.060", "references": [{"source": "security@elastic.co", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://discuss.elastic.co/t/elastic-stack-7-14-1-security-update/283077"}, {"source": "security@elastic.co", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://www.elastic.co/community/security/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://discuss.elastic.co/t/elastic-stack-7-14-1-security-update/283077"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://www.elastic.co/community/security/"}], "sourceIdentifier": "security@elastic.co", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security@elastic.co", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-79"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kibana: HTML injection issue (ESA-2021-23)", "id": "2148121", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2148121"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.4", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "status": "draft"}, "cwe": "CWE-79", "details": ["It was discovered that Kibana was not sanitizing document fields containing HTML snippets. Using this vulnerability, an attacker with the ability to write documents to an elasticsearch index could inject HTML. When the Discover app highlighted a search term containing the HTML, it would be rendered for the user.", "A flaw was found in Kibana. This issue occurs due to Kibana not sanitizing document fields containing HTML snippets. An attacker with the ability to write documents to an elasticsearch index could inject HTML. When the Discover app highlighted a search term containing the HTML, it would be rendered for the user."], "name": "CVE-2021-37936", "package_state": [{"cpe": "cpe:/a:redhat:logging:5", "fix_state": "Not affected", "package_name": "openshift-logging/elasticsearch-rhel8-operator", "product_name": "Logging Subsystem for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:logging:5", "fix_state": "Not affected", "package_name": "openshift-logging/kibana6-rhel8", "product_name": "Logging Subsystem for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:jboss_fuse:6", "fix_state": "Out of support scope", "package_name": "kibana", "product_name": "Red Hat JBoss Fuse 6"}, {"cpe": "cpe:/a:redhat:jboss_fuse_service_works:6", "fix_state": "Out of support scope", "package_name": "kibana", "product_name": "Red Hat JBoss Fuse Service Works 6"}, {"cpe": "cpe:/a:redhat:openshift:3.11", "fix_state": "Out of support scope", "package_name": "kibana", "product_name": "Red Hat OpenShift Container Platform 3.11"}, {"cpe": "cpe:/a:redhat:openshift:3.11", "fix_state": "Out of support scope", "package_name": "openshift3/ose-logging-kibana5", "product_name": "Red Hat OpenShift Container Platform 3.11"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Not affected", "package_name": "puppet-kibana3", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:openstack:16.1", "fix_state": "Not affected", "package_name": "puppet-kibana3", "product_name": "Red Hat OpenStack Platform 16.1"}, {"cpe": "cpe:/a:redhat:openstack:16.2", "fix_state": "Not affected", "package_name": "puppet-kibana3", "product_name": "Red Hat OpenStack Platform 16.2"}], "public_date": "2022-11-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-37936\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-37936\nhttps://discuss.elastic.co/t/elastic-stack-7-14-1-security-update/283077"], "statement": "- Red Hat OpenShift Logging uses Kibana 5.x which is not affected by this CVE.\n- The puppet-kibana3 package is shipped in Red Hat OpenStack which is not affected by this CVE.", "threat_severity": "Moderate"}

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