{"cve":"CVE-2021-42645","nvd":{"published":"2022-05-10T12:15:08.477","modified":"2026-06-17T04:09:54.620","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","score":10.0},"cwes":["CWE-434"],"references":["https://github.com/Net-hunter121/CMSimple_XH-Unauth-RCE","https://github.com/cmsimple-xh/cmsimple-xh/releases/tag/1.7.5","https://github.com/Net-hunter121/CMSimple_XH-Unauth-RCE","https://github.com/cmsimple-xh/cmsimple-xh/releases/tag/1.7.5"],"products":["cmsimple-xh:cmsimple_xh"],"source":"nvd","synced_at":"2026-10-19T21:31:59.322382750+00:00"},"epss":{"cve":"CVE-2021-42645","score":0.04826,"percentile":0.91984,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}