{"cve":{"cve_id":"CVE-2025-66296","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":0.00318,"epss_percentile":0.24606,"epss_as_of":"2026-09-15","description":"Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a privilege escalation vulnerability exists in Grav’s Admin plugin due to the absence of username uniqueness validation when creating users. A user with the create user permission can create a new account using the same username as an existing administrator account, set a new password/email, and then log in as that administrator. This effectively allows privilege escalation from limited user-manager permissions to full administrator access. This vulnerability is fixed in 1.8.0-beta.27.","published_at":"2025-12-01T21:03:07.231000Z","last_modified_at":null,"cvss_v3_score":8.8,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"poc","ssvc_automatable":false,"ssvc_technical_impact":"total","cwes":["CWE-266"],"nvd_references":["https://github.com/getgrav/grav/security/advisories/GHSA-cjcp-qxvg-4rjm","https://github.com/getgrav/grav/commit/3462d94d575064601689b236508c316242e15741"],"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":"2026-06-29T23:46:59.033383Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"L","value_label":"Low"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"getgrav","vendor_name":"getgrav","product_slug":"grav","product_name":"grav","version_start":"< 1.8.0-beta.27","version_start_inclusive":true,"version_end":"< 1.8.0-beta.27","version_end_inclusive":true,"cpe23_uri":"cve5:getgrav:grav:< 1.8.0-beta.27:< 1.8.0-beta.27"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/getgrav/grav/security/advisories/GHSA-cjcp-qxvg-4rjm","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://github.com/getgrav/grav/commit/3462d94d575064601689b236508c316242e15741","source_type":"PATCH","tags":["patch"]}],"timeline":[{"type":"published","at":"2025-12-01T21:03:07.231000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:49:06.072201Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:49:06.072201Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:49:06.072201Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"ssvc_changed","at":"2026-06-29T23:46:59.033383Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T23:46:59.033383Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T23:46:59.033383Z","label":"SSVC decision revised","source":"vulnrichment"}]}