{"id":"CVE-2021-26085","aliases":["EUVD-2021-12906","GHSA-8mjc-qhq2-3xm8"],"status":"published","title":"Affected versions of Atlassian Confluence Server allow remote attackers to view restricted...","description":"Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a Pre-Authorization Arbitrary File Read vulnerability in the /s/ endpoint. The affected versions are before version 7.4.10, and from version 7.5.0 before 7.12.3.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.99937,"percentile":0.99971,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":true,"fix_available":false},"cwes":["CWE-425","CWE-862"],"published":"2021-08-03T00:00:12Z","modified":"2026-06-17T03:42:49Z","kev":{"date_added":"2022-03-28","due_date":"2022-04-18","required_action":"Apply updates per vendor instructions.","known_ransomware_use":"Known"},"exploitation":[{"source":"euvd","since":"2022-03-28"},{"source":"kev","since":"2022-03-28"}],"exploits":[{"source":"pocgithub","id":"ColdFusionX/CVE-2021-26085","title":"ColdFusionX/CVE-2021-26085","date":"2021-10-05","url":"https://github.com/ColdFusionX/CVE-2021-26085"},{"source":"exploitdb","id":"EDB-50377","title":"Atlassian Confluence 7.12.2 - Pre-Authorization Arbitrary File Read","type":"webapps","platform":"java","date":"2021-10-05","url":"https://www.exploit-db.com/exploits/50377"},{"source":"nuclei","id":"CVE-2021-26085","title":"Atlassian Confluence Server - Local File Inclusion","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-26085.yaml"}],"products":[{"vendor":"atlassian","product":"confluence data center"},{"vendor":"atlassian","product":"confluence server"},{"vendor":"atlassian","product":"confluence_data_center"},{"vendor":"atlassian","product":"confluence_server"}],"references":[{"url":"https://jira.atlassian.com/browse/CONFSERVER-67893","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Vendor Advisory"]},{"url":"http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26085","tags":["government-resource","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26085"},{"url":"https://github.com/advisories/GHSA-8mjc-qhq2-3xm8"}],"sources":{"cve":[{"id":"CVE-2021-26085","description":"Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a Pre-Authorization Arbitrary File Read vulnerability in the /s/ endpoint. The affected versions are before version 7.4.10, and from version 7.5.0 before 7.12.3.","status":"published","published":"2021-08-03T00:00:12.199Z","modified":"2025-10-21T23:25:39.229Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-425"],"updated_at":"2026-11-02T14:32:57.368269Z"}],"euvd":[{"id":"EUVD-2021-12906","description":"Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a Pre-Authorization Arbitrary File Read vulnerability in the /s/ endpoint. The affected versions are before version 7.4.10, and from version 7.5.0 before 7.12.3.","status":"published","published":"2021-08-03T00:00:12Z","modified":"2025-10-21T23:25:39Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"exploited_since":"2022-03-28","updated_at":"2026-11-02T20:31:25.901288Z"}],"ghsa":[{"id":"GHSA-8mjc-qhq2-3xm8","title":"Affected versions of Atlassian Confluence Server allow remote attackers to view restricted...","description":"Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a Pre-Authorization Arbitrary File Read vulnerability in the /s/ endpoint. The affected versions are before version 7.4.10, and from version 7.5.0 before 7.12.3.","status":"published","published":"2022-05-24T19:09:53Z","modified":"2025-10-22T00:33:23Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-425","CWE-862"],"updated_at":"2026-11-02T15:04:08.198655Z"}],"kev":[{"id":"CVE-2021-26085","title":"Atlassian Confluence Server Pre-Authorization Arbitrary File Read Vulnerability","description":"Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a pre-authorization arbitrary file read vulnerability in the /s/ endpoint.","cwes":["CWE-425"],"kev":{"date_added":"2022-03-28","due_date":"2022-04-18","required_action":"Apply updates per vendor instructions.","known_ransomware_use":"Known"},"updated_at":"2026-11-02T17:00:16.541131Z"}],"nvd":[{"id":"CVE-2021-26085","description":"Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a Pre-Authorization Arbitrary File Read vulnerability in the /s/ endpoint. The affected versions are before version 7.4.10, and from version 7.5.0 before 7.12.3.","status":"published","published":"2021-08-03T00:15:08.557Z","modified":"2026-06-17T03:42:49.933Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-425"],"updated_at":"2026-11-02T14:06:56.562207Z"}]}}