{"id":"CVE-2024-52520","aliases":["EUVD-2024-45934","GHSA-pxqf-cfxw-mqmj"],"status":"published","title":"Nextcloud Server's link reference provider can be tricked into downloading bigger files than intended","description":"Nextcloud Server is a self hosted personal cloud system. Due to a pre-flighted HEAD request, the link reference provider could be tricked into downloading bigger websites than intended, to find open-graph data. It is recommended that the Nextcloud Server is upgraded to 28.0.10 or 29.0.7 and Nextcloud Enterprise Server is upgraded to 27.1.11.8, 28.0.10 or 29.0.7.","severity":{"version":"3.1","score":5.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00838,"percentile":0.58265,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400","CWE-79"],"published":"2024-11-15T16:41:42Z","modified":"2026-10-28T02:30:30Z","products":[{"vendor":"kiteworks","product":"security-advisories"},{"vendor":"nextcloud","product":"nextcloud_server"},{"vendor":"nextcloud","product":"security-advisories"}],"references":[{"url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-pxqf-cfxw-mqmj","tags":["x_refsource_CONFIRM","Vendor Advisory","advisory"]},{"url":"https://github.com/nextcloud/server/pull/47627","tags":["x_refsource_MISC","Patch","fix"]},{"url":"https://github.com/nextcloud/server/commit/873c42b0f1383d5b6f2b7a481e1d9620ed30f44a","tags":["x_refsource_MISC","Patch","fix"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/52xxx/CVE-2024-52520.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-52520","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2024-52520","title":"Nextcloud Server's link reference provider can be tricked into downloading bigger files than intended","description":"Nextcloud Server is a self hosted personal cloud system. Due to a pre-flighted HEAD request, the link reference provider could be tricked into downloading bigger websites than intended, to find open-graph data. It is recommended that the Nextcloud Server is upgraded to 28.0.10 or 29.0.7 and Nextcloud Enterprise Server is upgraded to 27.1.11.8, 28.0.10 or 29.0.7.","status":"published","published":"2024-11-15T16:41:42.412Z","modified":"2024-11-15T17:01:01.172Z","cvss":[{"version":"3.1","score":5.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-400","CWE-79"],"updated_at":"2026-11-02T14:34:03.661584Z"}],"euvd":[{"id":"EUVD-2024-45934","description":"Nextcloud Server is a self hosted personal cloud system. Due to a pre-flighted HEAD request, the link reference provider could be tricked into downloading bigger websites than intended, to find open-graph data. It is recommended that the Nextcloud Server is upgraded to 28.0.10 or 29.0.7 and Nextcloud Enterprise Server is upgraded to 27.1.11.8, 28.0.10 or 29.0.7.","status":"published","published":"2024-11-15T16:41:42Z","modified":"2024-11-15T17:01:01Z","cvss":[{"version":"3.1","score":5.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-03T00:04:59.542658Z"}],"nvd":[{"id":"CVE-2024-52520","description":"Nextcloud Server is a self hosted personal cloud system. Due to a pre-flighted HEAD request, the link reference provider could be tricked into downloading bigger websites than intended, to find open-graph data. It is recommended that the Nextcloud Server is upgraded to 28.0.10 or 29.0.7 and Nextcloud Enterprise Server is upgraded to 27.1.11.8, 28.0.10 or 29.0.7.","status":"published","published":"2024-11-15T17:15:22.2Z","modified":"2026-06-17T08:07:22.757Z","cvss":[{"version":"3.1","score":5.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-400","CWE-79"],"updated_at":"2026-11-02T14:10:37.281254Z"}],"osv":[{"id":"CVE-2024-52520","title":"Nextcloud Server's link reference provider can be tricked into downloading bigger files than intended","description":"Nextcloud Server is a self hosted personal cloud system. Due to a pre-flighted HEAD request, the link reference provider could be tricked into downloading bigger websites than intended, to find open-graph data. It is recommended that the Nextcloud Server is upgraded to 28.0.10 or 29.0.7 and Nextcloud Enterprise Server is upgraded to 27.1.11.8, 28.0.10 or 29.0.7.","status":"published","published":"2024-11-15T16:41:42.412Z","modified":"2026-10-28T02:30:30.705004835Z","cvss":[{"version":"3.1","score":5.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:44:44.032344Z"}]}}