{"cve":"CVE-2023-49105","nvd":{"published":"2023-11-21T22:15:08.613","modified":"2026-08-28T12:21:09.753","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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-287"],"references":["https://owncloud.com/security-advisories/webdav-api-authentication-bypass-using-pre-signed-urls/","https://owncloud.org/security","https://owncloud.com/security-advisories/webdav-api-authentication-bypass-using-pre-signed-urls/","https://owncloud.org/security","https://hunt.io/blog/chinese-speaking-operator-philippine-nuclear-naval-contractor"],"products":["owncloud:owncloud_server"],"source":"nvd","synced_at":"2026-10-19T21:42:07.670898610+00:00"},"epss":{"cve":"CVE-2023-49105","score":0.4319,"percentile":0.98725,"date":"2026-10-31"},"kev":{"cve":"CVE-2023-49105","date_added":"2026-08-27","due_date":"2026-08-30","vendor":"ownCloud","product":"ownCloud","known_ransomware":false},"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}