{"id":"CVE-2025-66510","summary":"Nextcloud Server Contacts Search allowed users to retrieve contact information of other users beyond their contact list","details":"Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server prior to 31.0.10 and 32.0.1 and Nextcloud Enterprise Server prior to 28.0.14.11, 29.0.16.8, 30.0.17.3, and 31.0.10, contacts search allowed to retrieve personal data of other users (emails, names, identifiers) without proper access control. This allows an authenticated user to retrieve information about accounts that are not related or added as contacts.","aliases":["GHSA-495w-cqv6-wr59"],"modified":"2026-04-10T05:34:24.269729Z","published":"2025-12-05T16:18:53.699Z","database_specific":{"cna_assigner":"GitHub_M","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66510.json","cwe_ids":["CWE-359"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66510.json"},{"type":"ADVISORY","url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-495w-cqv6-wr59"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66510"},{"type":"FIX","url":"https://github.com/nextcloud/server/commit/e4866860cbf24a746eb8a125587262a4c8831c57"},{"type":"FIX","url":"https://github.com/nextcloud/server/pull/55657"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/nextcloud/server","events":[{"introduced":"e43e44d2ee5a9b925a50fd739b733115d2859cd1"},{"fixed":"b8bda08fe4ebafb5d2e0ddd1e3e25417e3d7a84f"}],"database_specific":{"versions":[{"introduced":"32.0.0beta1"},{"fixed":"32.0.1"}]}},{"type":"GIT","repo":"https://github.com/nextcloud/server","events":[{"introduced":"0"},{"fixed":"082425bf9cb46fa22af0b95f2b2de0106d5cde49"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"31.0.10"}]}}],"versions":["v1.0.0beta1","v11.0.0","v11.0RC2","v12.0.0beta1","v12.0.0beta2","v12.0.0beta3","v12.0.0beta4","v13.0.0RC1","v13.0.0beta1","v13.0.0beta2","v13.0.0beta3","v13.0.0beta4","v14.0.0RC1","v14.0.0RC2","v14.0.0beta1","v14.0.0beta2","v14.0.0beta3","v14.0.0beta4","v15.0.0RC1","v15.0.0beta1","v15.0.0beta2","v16.0.0RC1","v16.0.0alpha1","v16.0.0beta1","v16.0.0beta2","v16.0.0beta3","v17.0.0beta1","v17.0.0beta2","v17.0.0beta3","v17.0.0beta4","v18.0.0RC1","v18.0.0beta1","v18.0.0beta2","v18.0.0beta3","v18.0.0beta4","v19.0.0RC1","v19.0.0RC2","v19.0.0beta1","v19.0.0beta2","v19.0.0beta3","v19.0.0beta4","v19.0.0beta5","v19.0.0beta6","v19.0.0beta7","v20.0.0RC1","v20.0.0beta1","v20.0.0beta2","v20.0.0beta3","v20.0.0beta4","v21.0.0beta1","v21.0.0beta2","v21.0.0beta3","v21.0.0beta4","v21.0.0beta5","v21.0.0beta6","v21.0.0beta7","v21.0.0beta8","v22.0.0beta1","v22.0.0beta2","v22.0.0beta4","v22.0.0beta5","v22.0.0rc1","v23.0.0beta1","v23.0.0beta2","v23.0.0beta3","v24.0.0beta1","v24.0.0beta2","v24.0.0beta3","v24.0.0rc1","v25.0.0beta1","v25.0.0beta2","v25.0.0beta3","v25.0.0beta4","v25.0.0beta5","v25.0.0beta6","v25.0.0beta7","v26.0.0beta1","v26.0.0beta2","v26.0.0beta3","v26.0.0beta4","v26.0.0beta5","v26.0.0rc1","v27.0.0beta1","v27.0.0beta2","v28.0.0beta1","v28.0.0beta2","v28.0.0beta3","v28.0.0beta4","v29.0.0beta1","v29.0.0beta2","v29.0.0beta3","v29.0.0beta4","v29.0.0beta5","v29.0.0beta6","v3.0","v30.0.0beta1","v30.0.0beta2","v30.0.0beta3","v30.0.0beta4","v30.0.0beta5","v31.0.0","v31.0.0beta1","v31.0.0beta2","v31.0.0beta3","v31.0.0beta4","v31.0.0beta5","v31.0.0rc1","v31.0.0rc2","v31.0.0rc3","v31.0.0rc4","v31.0.0rc5","v31.0.1","v31.0.10rc1","v31.0.10rc2","v31.0.1rc1","v31.0.1rc2","v31.0.2","v31.0.2rc1","v31.0.3","v31.0.3rc1","v31.0.3rc2","v31.0.4","v31.0.4rc1","v31.0.5","v31.0.5rc1","v31.0.6","v31.0.6rc1","v31.0.6rc2","v31.0.7","v31.0.7rc1","v31.0.8","v31.0.8rc1","v31.0.9","v31.0.9rc1","v32.0.0","v32.0.0beta1","v32.0.0beta2","v32.0.0beta3","v32.0.0beta4","v32.0.0beta5","v32.0.0rc1","v32.0.0rc2","v32.0.0rc3","v32.0.0rc4","v32.0.1rc1","v32.0.1rc2","v4.0.0","v4.0.0RC","v4.0.0RC2","v4.0.0beta","v4.0.1","v4.0.4","v4.0.5","v4.0.6","v4.5.0","v4.5.0RC1","v4.5.0RC2","v4.5.0RC3","v4.5.0beta3","v4.5.0beta4","v5.0.0","v5.0.0RC1","v5.0.0RC2","v5.0.0RC3","v5.0.0alpha1","v5.0.0beta1","v5.0.0beta2","v6.0.0RC1","v6.0.0RC2","v6.0.0alpha2","v6.0.0beta2","v6.0.0beta3","v6.0.0beta4","v6.0.0beta5","v7.0.0alpha2","v7.0.0beta1","v8.0.0","v8.0.0RC1","v8.0.0RC2","v8.0.0alpha1","v8.0.0alpha2","v8.0.0beta1","v8.0.0beta2","v8.1.0alpha1","v8.1.0alpha2","v8.1.0beta1","v8.1.0beta2","v8.1RC2","v8.2RC1","v8.2beta1","v9.0.0beta2","v9.0beta1","v9.1.0beta1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-66510.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N"}]}