{"schema":"threatline.record/2","record":{"id":"CVE-2023-49105","aliases":[],"summary":"ownCloud Improper Authentication Vulnerability","details":"ownCloud contains an improper authentication vulnerability that allows an attacker to access, modify, or delete any file without authentication if the username of a victim is known, and the victim has no signing-key configured.","categories":["Applications & CMS"],"product":"ownCloud","vendor":"ownCloud","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2023-49105","source_modified_at":"2026-08-28T03:55:23.877Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}],"defaultStatus":null}],"fixed_versions":[],"cvss":9.8,"severity":"Critical","kev":{"listed":true,"date_added":"2026-08-27","due_date":"2026-08-30","required_action":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","ransomware_campaign_use":"Unknown","forensic_triage":true},"epss":{"probability":0.4319,"percentile":0.98725,"score_date":"2026-10-23"},"published_at":"2023-11-21T00:00:00.000Z","modified_at":"2026-08-28T03:55:23.877Z","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-2023-49105","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-08-28T03:55:23.877Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2023-49105","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://owncloud.org/security","tags":["x_transferred"]},{"source":"CVE List","url":"https://owncloud.com/security-advisories/webdav-api-authentication-bypass-using-pre-signed-urls/","tags":["x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-49105","source":"CISA KEV"},{"source":"CVE List","url":"https://hunt.io/blog/chinese-speaking-operator-philippine-nuclear-naval-contractor","tags":["third-party-advisory"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-49105","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"active","automatable":"yes","technical_impact":"total","assessed_at":"2023-11-27T00:00:00+00:00"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-08-28T03:55:23.877Z","content_hash":"efb6465f826bac186e18293cdd6f913f50178e64ac66151c0fd2f692af643c75"}}