{"id":"CVE-2021-42645","aliases":["EUVD-2021-29609","GHSA-56jv-hmch-qm6c"],"status":"published","title":"CMSimple_XH 1.7.4 is affected by a remote code execution (RCE) vulnerability. To exploit this...","description":"CMSimple_XH 1.7.4 is affected by a remote code execution (RCE) vulnerability. To exploit this vulnerability, an attacker must use the \"File\" parameter to upload a PHP payload to get a reverse shell from the vulnerable host.","severity":{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.04826,"percentile":0.92057,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-434"],"published":"2022-05-10T11:14:13Z","modified":"2026-10-20T10:55:01Z","products":[{"vendor":"cmsimple-xh","product":"cmsimple_xh"}],"references":[{"url":"https://github.com/Net-hunter121/CMSimple_XH-Unauth-RCE","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://github.com/cmsimple-xh/cmsimple-xh/releases/tag/1.7.5","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-42645"},{"url":"https://github.com/advisories/GHSA-56jv-hmch-qm6c"}],"sources":{"cve":[{"id":"CVE-2021-42645","description":"CMSimple_XH 1.7.4 is affected by a remote code execution (RCE) vulnerability. To exploit this vulnerability, an attacker must use the \"File\" parameter to upload a PHP payload to get a reverse shell from the vulnerable host.","status":"published","published":"2022-05-10T11:14:13Z","modified":"2024-08-04T03:38:50.101Z","updated_at":"2026-11-02T14:32:58.359368Z"}],"euvd":[{"id":"EUVD-2021-29609","description":"CMSimple_XH 1.7.4 is affected by a remote code execution (RCE) vulnerability. To exploit this vulnerability, an attacker must use the \"File\" parameter to upload a PHP payload to get a reverse shell from the vulnerable host.","status":"published","published":"2022-05-10T11:14:13Z","modified":"2024-08-04T03:38:50Z","updated_at":"2026-11-03T03:24:15.755984Z"}],"ghsa":[{"id":"GHSA-56jv-hmch-qm6c","title":"CMSimple_XH 1.7.4 is affected by a remote code execution (RCE) vulnerability. To exploit this...","description":"CMSimple_XH 1.7.4 is affected by a remote code execution (RCE) vulnerability. To exploit this vulnerability, an attacker must use the \"File\" parameter to upload a PHP payload to get a reverse shell from the vulnerable host.","status":"published","published":"2022-05-11T00:01:39Z","modified":"2023-02-01T05:02:10Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:49:51.819251Z"}],"nvd":[{"id":"CVE-2021-42645","description":"CMSimple_XH 1.7.4 is affected by a remote code execution (RCE) vulnerability. To exploit this vulnerability, an attacker must use the \"File\" parameter to upload a PHP payload to get a reverse shell from the vulnerable host.","status":"published","published":"2022-05-10T12:15:08.477Z","modified":"2026-06-17T04:09:54.62Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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":"2026-11-02T14:07:06.029737Z"}],"osv":[{"id":"CVE-2021-42645","description":"CMSimple_XH 1.7.4 is affected by a remote code execution (RCE) vulnerability. To exploit this vulnerability, an attacker must use the \"File\" parameter to upload a PHP payload to get a reverse shell from the vulnerable host.","status":"published","published":"2022-05-10T12:15:08.477Z","modified":"2026-10-20T10:55:01.455272134Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:21.557945Z"}]}}