{"id":"CVE-2021-41560","aliases":["EUVD-2021-28577","GHSA-c9rc-7w87-3h5x"],"status":"published","title":"OpenCATS through 0.9.6 allows remote attackers to execute arbitrary code by uploading an...","description":"OpenCATS through 0.9.6 allows remote attackers to execute arbitrary code by uploading an executable file via lib/FileUtility.php.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.11306,"percentile":0.96011,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-434"],"published":"2021-12-15T06:36:00Z","modified":"2026-10-20T10:54:58Z","exploits":[{"source":"pocgithub","id":"Nickguitar/RevCAT","title":"Nickguitar/RevCAT","date":"2021-11-10","url":"https://github.com/Nickguitar/RevCAT"}],"products":[{"vendor":"opencats","product":"opencats"}],"references":[{"url":"https://youtu.be/isiDISag7CM","tags":["x_refsource_MISC","x_transferred","Broken Link","Third Party Advisory","advisory"]},{"url":"https://github.com/opencats/OpenCATS/commit/b1af3bde1f68bec1c703ad66a3e390f15ed8ebe1","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://github.com/Nickguitar/RevCAT","tags":["x_refsource_MISC","x_transferred","Exploit","Patch","Third Party Advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-41560"},{"url":"https://github.com/advisories/GHSA-c9rc-7w87-3h5x"}],"sources":{"cve":[{"id":"CVE-2021-41560","description":"OpenCATS through 0.9.6 allows remote attackers to execute arbitrary code by uploading an executable file via lib/FileUtility.php.","status":"published","published":"2021-12-15T06:36:00Z","modified":"2024-08-04T03:15:28.688Z","updated_at":"2026-11-02T14:32:59.105382Z"}],"euvd":[{"id":"EUVD-2021-28577","description":"OpenCATS through 0.9.6 allows remote attackers to execute arbitrary code by uploading an executable file via lib/FileUtility.php.","status":"published","published":"2021-12-15T06:36:00Z","modified":"2024-08-04T03:15:28Z","updated_at":"2026-11-03T03:24:17.663217Z"}],"ghsa":[{"id":"GHSA-c9rc-7w87-3h5x","title":"OpenCATS through 0.9.6 allows remote attackers to execute arbitrary code by uploading an...","description":"OpenCATS through 0.9.6 allows remote attackers to execute arbitrary code by uploading an executable file via lib/FileUtility.php.","status":"published","published":"2021-12-16T00:02:17Z","modified":"2023-02-01T05:06:51Z","cwes":["CWE-434"],"updated_at":"2026-11-02T14:50:26.062502Z"}],"nvd":[{"id":"CVE-2021-41560","description":"OpenCATS through 0.9.6 allows remote attackers to execute arbitrary code by uploading an executable file via lib/FileUtility.php.","status":"published","published":"2021-12-15T07:15:07.317Z","modified":"2026-06-17T04:08:39.027Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:07:02.189991Z"}],"osv":[{"id":"CVE-2021-41560","description":"OpenCATS through 0.9.6 allows remote attackers to execute arbitrary code by uploading an executable file via lib/FileUtility.php.","status":"published","published":"2021-12-15T07:15:07.317Z","modified":"2026-10-20T10:54:58.562734724Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:21.557945Z"}]}}