{"id":"CVE-2020-8280","aliases":["EUVD-2020-29148","GHSA-v342-j8qr-3849"],"status":"published","title":"A missing file type check in Nextcloud Contacts 3.4.0 allows a malicious user to upload SVG files...","description":"A missing file type check in Nextcloud Contacts 3.4.0 allows a malicious user to upload SVG files as PNG files to perform cross-site scripting (XSS) attacks.","severity":{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00642,"percentile":0.51084,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-01-06T20:59:57Z","modified":"2026-10-24T10:30:38Z","products":[{"vendor":"nextcloud","product":"contacts"}],"references":[{"url":"https://hackerone.com/reports/998422","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://nextcloud.com/security/advisory/?id=NC-SA-2020-044","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-8280"},{"url":"https://github.com/advisories/GHSA-v342-j8qr-3849"}],"sources":{"cve":[{"id":"CVE-2020-8280","description":"A missing file type check in Nextcloud Contacts 3.4.0 allows a malicious user to upload SVG files as PNG files to perform cross-site scripting (XSS) attacks.","status":"published","published":"2021-01-06T20:59:57Z","modified":"2024-08-04T09:56:28.301Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:35:50.545879Z"}],"euvd":[{"id":"EUVD-2020-29148","description":"A missing file type check in Nextcloud Contacts 3.4.0 allows a malicious user to upload SVG files as PNG files to perform cross-site scripting (XSS) attacks.","status":"published","published":"2021-01-06T20:59:57Z","modified":"2024-08-04T09:56:28Z","updated_at":"2026-11-03T03:07:57.599144Z"}],"ghsa":[{"id":"GHSA-v342-j8qr-3849","title":"A missing file type check in Nextcloud Contacts 3.4.0 allows a malicious user to upload SVG files...","description":"A missing file type check in Nextcloud Contacts 3.4.0 allows a malicious user to upload SVG files as PNG files to perform cross-site scripting (XSS) attacks.","status":"published","published":"2022-05-24T17:38:08Z","modified":"2023-01-29T05:05:59Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:45:55.193009Z"}],"nvd":[{"id":"CVE-2020-8280","description":"A missing file type check in Nextcloud Contacts 3.4.0 allows a malicious user to upload SVG files as PNG files to perform cross-site scripting (XSS) attacks.","status":"published","published":"2021-01-06T21:15:14.583Z","modified":"2026-06-17T03:26:11.157Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":3.5,"vector":"AV:N/AC:M/Au:S/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:28.892872Z"}],"osv":[{"id":"CVE-2020-8280","description":"A missing file type check in Nextcloud Contacts 3.4.0 allows a malicious user to upload SVG files as PNG files to perform cross-site scripting (XSS) attacks.","status":"published","published":"2021-01-06T21:15:14.583Z","modified":"2026-10-24T10:30:38.360712961Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:17.663289Z"}]}}