CVE-2021-26084

{"id": "CVE-2021-26084", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"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"}, "impactScore": 5.9, "exploitabilityScore": 3.9}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"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"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "published": "2021-08-30T07:15:06.587", "references": [{"url": "http://packetstormsecurity.com/files/167449/Atlassian-Confluence-Namespace-OGNL-Injection.html", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "source": "security@atlassian.com"}, {"url": "https://jira.atlassian.com/browse/CONFSERVER-67940", "tags": ["Issue Tracking", "Patch", "Vendor Advisory"], "source": "security@atlassian.com"}, {"url": "http://packetstormsecurity.com/files/167449/Atlassian-Confluence-Namespace-OGNL-Injection.html", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://jira.atlassian.com/browse/CONFSERVER-67940", "tags": ["Issue Tracking", "Patch", "Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26084", "tags": ["US Government Resource"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-917"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-917"}]}], "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."}, {"lang": "es", "value": "En las versiones afectadas de Confluence Server y Data Center, se presenta una vulnerabilidad de inyecci\u00f3n OGNL que permitir\u00eda a un usuario no autenticado ejecutar c\u00f3digo arbitrario en una instancia de Confluence Server o Data Center. Las versiones afectadas son las versiones anteriores a 6.13.23, desde versiones 6.14.0 anteriores a 7.4.11, desde versiones 7.5.0 anteriores a 7.11.6 y desde versiones 7.12.0 anteriores a 7.12.5."}], "lastModified": "2025-10-24T13:38:44.590", "cisaActionDue": "2021-11-17", "cisaExploitAdd": "2021-11-03", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6A28735F-4827-4410-8B0B-C209ECD21DFC", "versionEndExcluding": "6.13.23"}, {"criteria": "cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FA5224DF-97AB-4D8E-B66D-FC65A1333531", "versionEndExcluding": "7.4.11", "versionStartIncluding": "6.14.0"}, {"criteria": "cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E776BF66-74F1-4D8E-9099-42A4E5EEE300", "versionEndExcluding": "7.11.6", "versionStartIncluding": "7.5.0"}, {"criteria": "cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E11303D6-258F-4FAC-A868-BF506E7F5A4E", "versionEndExcluding": "7.12.5", "versionStartIncluding": "7.12.0"}, {"criteria": "cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6D1FF67F-3FB4-4C0C-8263-3D4CA00A02CD", "versionEndExcluding": "6.13.23"}, {"criteria": "cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F5CCD4D0-6BC7-442A-9D4D-43841FE40F3E", "versionEndExcluding": "7.4.11", "versionStartIncluding": "6.14.0"}, {"criteria": "cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DF59072C-9911-4035-A75A-27D882988919", "versionEndExcluding": "7.11.6", "versionStartIncluding": "7.5.0"}, {"criteria": "cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BFEE2534-EBEF-438B-B616-ED4FFBC9246E", "versionEndExcluding": "7.12.5", "versionStartIncluding": "7.12.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@atlassian.com", "cisaRequiredAction": "Apply updates per vendor instructions.", "cisaVulnerabilityName": "Atlassian Confluence Server and Data Center Object-Graph Navigation Language (OGNL) Injection Vulnerability"}