{"cve":{"cve_id":"CVE-2018-3761","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.01657,"epss_percentile":0.73554,"epss_as_of":"2026-06-23","description":"Nextcloud Server before 12.0.8 and 13.0.3 suffer from improper authentication on the OAuth2 token endpoint. Missing checks potentially allowed handing out new tokens in case the OAuth2 client was partly compromised.","published_at":"2018-07-05T16:00:00Z","last_modified_at":null,"cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-287"],"nvd_references":["https://hackerone.com/reports/343111","https://nextcloud.com/security/advisory/?id=nc-sa-2018-003"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:11:24.473010Z"},"effective_severity":null,"badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"nextcloud","vendor_name":"nextcloud","product_slug":"nextcloud-server","product_name":"nextcloud/server","version_start":"<13.0.3, <12.0.8","version_start_inclusive":true,"version_end":"<13.0.3, <12.0.8","version_end_inclusive":true,"cpe23_uri":"cve5:nextcloud:nextcloud-server:<13.0.3, <12.0.8:<13.0.3, <12.0.8"}],"exploit_refs":[],"news":[],"references":[{"url":"https://hackerone.com/reports/343111","source_type":"MISC","tags":[]},{"url":"https://nextcloud.com/security/advisory/?id=nc-sa-2018-003","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2018-07-05T16:00:00Z","label":"CVE published","source":null}]}