{ "containers": { "cna": { "affected": [ { "product": "Confluence Server", "vendor": "Atlassian", "versions": [ { "lessThan": "6.13.23", "status": "affected", "version": "unspecified", "versionType": "custom" }, { "lessThan": "unspecified", "status": "affected", "version": "6.14.0", "versionType": "custom" }, { "lessThan": "7.4.11", "status": "affected", "version": "unspecified", "versionType": "custom" }, { "lessThan": "unspecified", "status": "affected", "version": "7.5.0", "versionType": "custom" }, { "lessThan": "7.11.6", "status": "affected", "version": "unspecified", "versionType": "custom" }, { "lessThan": "unspecified", "status": "affected", "version": "7.12.0", "versionType": "custom" }, { "lessThan": "7.12.5", "status": "affected", "version": "unspecified", "versionType": "custom" } ] }, { "product": "Confluence Data Center", "vendor": "Atlassian", "versions": [ { "lessThan": "6.13.23", "status": "affected", "version": "unspecified", "versionType": "custom" }, { "lessThan": "unspecified", "status": "affected", "version": "6.14.0", "versionType": "custom" }, { "lessThan": "7.4.11", "status": "affected", "version": "unspecified", "versionType": "custom" }, { "lessThan": "unspecified", "status": "affected", "version": "7.5.0", "versionType": "custom" }, { "lessThan": "7.11.6", "status": "affected", "version": "unspecified", "versionType": "custom" }, { "lessThan": "unspecified", "status": "affected", "version": "7.12.0", "versionType": "custom" }, { "lessThan": "7.12.5", "status": "affected", "version": "unspecified", "versionType": "custom" } ] } ], "datePublic": "2021-08-10T00:00:00.000Z", "descriptions": [ { "lang": "en", "value": "In affected versions of Confluence Server and Data Center, an OGNL injection vulnerability exists that would allow an unauthenticated attacker to execute arbitrary code on a Confluence Server or Data Center instance. The affected versions are before version 6.13.23, from version 6.14.0 before 7.4.11, from version 7.5.0 before 7.11.6, and from version 7.12.0 before 7.12.5." } ], "problemTypes": [ { "descriptions": [ { "description": "Remote Code Execution", "lang": "en", "type": "text" } ] } ], "providerMetadata": { "dateUpdated": "2022-06-08T17:06:12.000Z", "orgId": "f08a6ab8-ed46-4c22-8884-d911ccfe3c66", "shortName": "atlassian" }, "references": [ { "tags": [ "x_refsource_MISC" ], "url": "https://jira.atlassian.com/browse/CONFSERVER-67940" }, { "tags": [ "x_refsource_MISC" ], "url": "http://packetstormsecurity.com/files/167449/Atlassian-Confluence-Namespace-OGNL-Injection.html" } ], "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "security@atlassian.com", "DATE_PUBLIC": "2021-08-10T00:00:00", "ID": "CVE-2021-26084", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Confluence Server", "version": { "version_data": [ { "version_affected": "<", "version_value": "6.13.23" }, { "version_affected": ">=", "version_value": "6.14.0" }, { "version_affected": "<", "version_value": "7.4.11" }, { "version_affected": ">=", "version_value": "7.5.0" }, { "version_affected": "<", "version_value": "7.11.6" }, { "version_affected": ">=", "version_value": "7.12.0" }, { "version_affected": "<", "version_value": "7.12.5" } ] } }, { "product_name": "Confluence Data Center", "version": { "version_data": [ { "version_affected": "<", "version_value": "6.13.23" }, { "version_affected": ">=", "version_value": "6.14.0" }, { "version_affected": "<", "version_value": "7.4.11" }, { "version_affected": ">=", "version_value": "7.5.0" }, { "version_affected": "<", "version_value": "7.11.6" }, { "version_affected": ">=", "version_value": "7.12.0" }, { "version_affected": "<", "version_value": "7.12.5" } ] } } ] }, "vendor_name": "Atlassian" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "In affected versions of Confluence Server and Data Center, an OGNL injection vulnerability exists that would allow an unauthenticated attacker to execute arbitrary code on a Confluence Server or Data Center instance. The affected versions are before version 6.13.23, from version 6.14.0 before 7.4.11, from version 7.5.0 before 7.11.6, and from version 7.12.0 before 7.12.5." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "Remote Code Execution" } ] } ] }, "references": { "reference_data": [ { "name": "https://jira.atlassian.com/browse/CONFSERVER-67940", "refsource": "MISC", "url": "https://jira.atlassian.com/browse/CONFSERVER-67940" }, { "name": "http://packetstormsecurity.com/files/167449/Atlassian-Confluence-Namespace-OGNL-Injection.html", "refsource": "MISC", "url": "http://packetstormsecurity.com/files/167449/Atlassian-Confluence-Namespace-OGNL-Injection.html" } ] } } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T20:19:19.592Z" }, "title": "CVE Program Container", "references": [ { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://jira.atlassian.com/browse/CONFSERVER-67940" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "http://packetstormsecurity.com/files/167449/Atlassian-Confluence-Namespace-OGNL-Injection.html" } ] }, { "problemTypes": [ { "descriptions": [ { "type": "CWE", "cweId": "CWE-917", "lang": "en", "description": "CWE-917 Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')" } ] } ], "references": [ { "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26084", "tags": [ "government-resource" ] } ], "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2025-12-16T18:01:22.351686Z", "id": "CVE-2021-26084", "options": [ { "Exploitation": "active" }, { "Automatable": "yes" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } }, { "other": { "type": "kev", "content": { "dateAdded": "2021-11-03", "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26084" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-12-16T18:04:05.834Z" } } ] }, "cveMetadata": { "assignerOrgId": "f08a6ab8-ed46-4c22-8884-d911ccfe3c66", "assignerShortName": "atlassian", "cveId": "CVE-2021-26084", "datePublished": "2021-08-30T06:30:14.248Z", "dateReserved": "2021-01-25T00:00:00.000Z", "dateUpdated": "2025-12-16T18:04:05.834Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.2" }