{"cve_id":"CVE-2023-49105","published":"2023-11-21T22:15:08.613000+00:00","last_modified":"2026-08-28T12:21:09.753000+00:00","vuln_status":"Analyzed","description":"An issue was discovered in ownCloud owncloud/core before 10.13.1. An attacker can access, modify, or delete any file without authentication if the username of a victim is known, and the victim has no signing-key configured. This occurs because pre-signed URLs can be accepted even when no signing-key is configured for the owner of the files. The earliest affected version is 10.6.0.","cvss_version":"3.1","cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","base_score":9.8,"base_severity":"CRITICAL","attack_vector":"NETWORK","privileges_req":"NONE","user_interaction":"NONE","scope":"UNCHANGED","impact_c":"HIGH","impact_i":"HIGH","impact_a":"HIGH","cwe_ids":["CWE-287"],"in_kev":true,"kev_date_added":"2026-08-27","kev_ransomware":false,"epss_score":0.4319,"epss_percentile":0.98725,"cap_rule_version":"0.1.1","stage":"INITIAL_ACCESS","req_access":"NONE","req_vector":"NETWORK","req_user_interaction":false,"grant_access":"USER","caps":["AUTH_BYPASS","CODE_EXEC"],"terminal":false,"cap_confidence":"high","ingested_at":"2026-09-18T10:44:02.415099+00:00","first_seen":"2023-11-21T22:15:08.613000+00:00","kev_first_seen":"2026-08-27T00:00:00+00:00","novelty_score":0.0,"novelty_reasons":[],"novelty_at":null,"vendors":["owncloud"],"products":["owncloud_server"],"affected":[{"vendor":"owncloud","product":"owncloud_server","ranges":["≥ 10.6.0 and < 10.13.1"]}]}