{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-21579", "assignerOrgId": "f08a6ab8-ed46-4c22-8884-d911ccfe3c66", "state": "PUBLISHED", "assignerShortName": "atlassian", "dateReserved": "2026-01-01T00:00:40.721Z", "datePublished": "2026-07-21T17:00:00.404Z", "dateUpdated": "2026-07-21T17:00:00.404Z"}, "containers": {"cna": {"affected": [{"vendor": "Atlassian", "product": "Confluence Data Center", "versions": [{"version": "10.2.0 to 10.2.13", "status": "affected"}, {"version": "10.1.0 to 10.1.2", "status": "affected"}, {"version": "10.0.2 to 10.0.3", "status": "affected"}, {"version": "9.2.0 to 9.2.21", "status": "affected"}, {"version": "9.1.0 to 9.1.1", "status": "affected"}, {"version": "9.0.1 to 9.0.3", "status": "affected"}, {"version": "8.9.5 to 8.9.8", "status": "affected"}, {"version": "8.5.14 to 8.5.31", "status": "affected"}, {"version": "7.19.26 to 7.19.30", "status": "affected"}, {"version": "10.2.14", "status": "unaffected"}, {"version": "9.2.22", "status": "unaffected"}]}], "descriptions": [{"lang": "en", "value": "This High severity Information Disclosure vulnerability was introduced in versions 7.17.0, 7.19.0, 8.5.0, 8.9.0, 9.0.1, 9.1.0, 9.2.0, 10.0.2, 10.1.0, and 10.2.0 of Confluence Data Center.\r\n\r\nThis Information Disclosure vulnerability, with a CVSS Score of 8.2, allows an unauthenticated attacker to view sensitive information via an Information Disclosure vulnerability.\r\n\r\nAtlassian recommends that Confluence Data Center customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions:\r\n Confluence Data Center 9.2: Upgrade to a release greater than or equal to 9.2.22\r\n\r\n Confluence Data Center 10.2: Upgrade to a release greater than or equal to 10.2.14\r\n\r\nSee the release notes ([https://confluence.atlassian.com/doc/confluence-release-notes-327.html]). You can download the latest version of Confluence Data Center from the download center ([https://www.atlassian.com/software/confluence/download-archives]).\r\n\r\nThis vulnerability was reported via our Atlassian (Internal) program."}], "problemTypes": [{"descriptions": [{"description": "Information Disclosure", "lang": "en", "type": "Information Disclosure"}]}], "references": [{"url": "https://confluence.atlassian.com/pages/viewpage.action?pageId=1821999345"}, {"url": "https://jira.atlassian.com/browse/CONFSERVER-104340"}], "metrics": [{"cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N", "baseScore": 8.2, "baseSeverity": "HIGH"}}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*", "versionStartIncluding": "9.2.0", "versionEndIncluding": "9.2.21", "vulnerable": true}, {"criteria": 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