{"cve":"CVE-2020-35729","nvd":{"published":"2020-12-27T05:15:11.683","modified":"2026-06-17T03:14:12.143","status":"Modified","description":"KLog Server 2.4.1 allows OS command injection via shell metacharacters in the actions/authenticate.php user parameter.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-78"],"references":["http://packetstormsecurity.com/files/160798/Klog-Server-2.4.1-Command-Injection.html","http://packetstormsecurity.com/files/161123/Klog-Server-2.4.1-Command-Injection.html","http://packetstormsecurity.com/files/161410/Klog-Server-2.4.1-Command-Injection.html","https://github.com/mustgundogdu/Research/blob/main/KLOG_SERVER/Exploit_Code","https://github.com/mustgundogdu/Research/blob/main/KLOG_SERVER/README.md"],"products":["klogserver:klog_server"],"source":"nvd","synced_at":"2026-10-19T21:12:09.559580076+00:00"},"epss":{"cve":"CVE-2020-35729","score":0.88099,"percentile":0.99766,"date":"2026-10-31"},"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."]}