{"schema":"threatline.record/2","record":{"id":"CVE-2021-26085","aliases":[],"summary":"Atlassian Confluence Server Pre-Authorization Arbitrary File Read Vulnerability","details":"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.","categories":["Applications & CMS"],"product":"Confluence Server","vendor":"Atlassian","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26085","source_modified_at":"2025-10-21T23:25:39.229Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Confluence Server","vendor":"Atlassian","versions":[{"lessThan":"7.4.10","status":"affected","version":"unspecified","versionType":"custom"},{"lessThan":"unspecified","status":"affected","version":"7.5.0","versionType":"custom"},{"lessThan":"7.12.3","status":"affected","version":"unspecified","versionType":"custom"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26085","source_modified_at":"2025-10-21T23:25:39.229Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Confluence Data Center","vendor":"Atlassian","versions":[{"lessThan":"7.4.10","status":"affected","version":"unspecified","versionType":"custom"},{"lessThan":"unspecified","status":"affected","version":"7.5.0","versionType":"custom"},{"lessThan":"7.12.3","status":"affected","version":"unspecified","versionType":"custom"}],"defaultStatus":null}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26085","source_modified_at":"2025-10-21T23:25:39.229Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Confluence Server","ecosystem":null},"version":"7.4.10","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26085","source_modified_at":"2025-10-21T23:25:39.229Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Confluence Server","ecosystem":null},"version":"7.12.3","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26085","source_modified_at":"2025-10-21T23:25:39.229Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Confluence Data Center","ecosystem":null},"version":"7.4.10","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-26085","source_modified_at":"2025-10-21T23:25:39.229Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Confluence Data Center","ecosystem":null},"version":"7.12.3","basis":"first unaffected version stated in the CVE record"}],"cvss":5.3,"severity":"Medium","kev":{"listed":true,"date_added":"2022-03-28","due_date":"2022-04-18","required_action":"Apply updates per vendor instructions.","ransomware_campaign_use":"Known"},"epss":{"probability":0.99937,"percentile":0.99972,"score_date":"2026-10-23"},"published_at":"2021-08-03T00:00:12.199Z","modified_at":"2025-10-21T23:25:39.229Z","provenance":[{"source":"CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:00:09.9001Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2021-26085","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2025-10-21T23:25:39.229Z"},{"source":"Exploit-DB","url":"https://www.exploit-db.com/exploits/50377","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2021-10-05"},{"source":"Nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-26085.yaml","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":null},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2021-26085","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","Exploit-DB","Nuclei","EPSS"],"references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26085","source":"CISA KEV"},{"source":"CVE List","url":"https://jira.atlassian.com/browse/CONFSERVER-67893","tags":["x_refsource_MISC","x_transferred"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26085","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CISA ADP","ssvc":{"exploitation":"active","automatable":"yes","technical_impact":"partial","assessed_at":"2025-02-07T12:29:39.323995Z"},"exploits":[{"source":"Exploit-DB","kind":"Webapps exploit","name":"Atlassian Confluence 7.12.2 - Pre-Authorization Arbitrary File Read","url":"https://www.exploit-db.com/exploits/50377","date":"2021-10-05","added":"2021-10-05","verified":false},{"source":"Nuclei","kind":"Scanner template","name":"Atlassian Confluence Server - Local File Inclusion","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-26085.yaml"}],"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2025-10-21T23:25:39.229Z","content_hash":"e5f60d5c8623a65c8a04bc428cae40b10b6e85678bcba2985053ad6b4dcbfb75"}}