{"id":"CVE-2020-8181","aliases":["EUVD-2020-29062","GHSA-wgmx-fv9q-wpfx"],"status":"published","title":"A missing file type check in Nextcloud Contacts 3.2.0 allowed a malicious user to upload any file...","description":"A missing file type check in Nextcloud Contacts 3.2.0 allowed a malicious user to upload any file as avatars.","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.0079,"percentile":0.56543,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-434","CWE-840"],"published":"2020-07-10T15:48:41Z","modified":"2026-10-24T10:30:18Z","products":[{"vendor":"nextcloud","product":"contacts"}],"references":[{"url":"https://hackerone.com/reports/808287%2C","tags":["x_refsource_MISC","x_transferred","web"]},{"url":"https://nextcloud.com/security/advisory/?id=NC-SA-2020-024","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-8181"},{"url":"https://hackerone.com/reports/808287,"},{"url":"https://github.com/advisories/GHSA-wgmx-fv9q-wpfx"}],"sources":{"cve":[{"id":"CVE-2020-8181","description":"A missing file type check in Nextcloud Contacts 3.2.0 allowed a malicious user to upload any file as avatars.","status":"published","published":"2020-07-10T15:48:41Z","modified":"2024-08-04T09:56:27.392Z","cwes":["CWE-840"],"updated_at":"2026-11-02T14:35:50.88562Z"}],"euvd":[{"id":"EUVD-2020-29062","description":"A missing file type check in Nextcloud Contacts 3.2.0 allowed a malicious user to upload any file as avatars.","status":"published","published":"2020-07-10T15:48:41Z","modified":"2024-08-04T09:56:27Z","updated_at":"2026-11-03T03:07:58.055641Z"}],"ghsa":[{"id":"GHSA-wgmx-fv9q-wpfx","title":"A missing file type check in Nextcloud Contacts 3.2.0 allowed a malicious user to upload any file...","description":"A missing file type check in Nextcloud Contacts 3.2.0 allowed a malicious user to upload any file as avatars.","status":"published","published":"2022-05-24T17:22:44Z","modified":"2023-01-29T05:03:21Z","updated_at":"2026-11-02T14:45:18.070616Z"}],"nvd":[{"id":"CVE-2020-8181","description":"A missing file type check in Nextcloud Contacts 3.2.0 allowed a malicious user to upload any file as avatars.","status":"published","published":"2020-07-10T16:15:11.703Z","modified":"2026-06-17T03:26:00.297Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-840","CWE-434"],"updated_at":"2026-11-02T14:06:09.126752Z"}],"osv":[{"id":"CVE-2020-8181","description":"A missing file type check in Nextcloud Contacts 3.2.0 allowed a malicious user to upload any file as avatars.","status":"published","published":"2020-07-10T16:15:11.703Z","modified":"2026-10-24T10:30:18.861889251Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:17.663289Z"}]}}