{"id":"CVE-2026-65638","aliases":["EUVD-2026-75595","GHSA-8qv3-jfg8-cjvp"],"status":"published","title":"Improper escaping of a request URL in  ConfigServer Security \u0026 Firewall allows an unauthenticated...","description":"Improper escaping of a request URL in  ConfigServer Security \u0026 Firewall allows an unauthenticated remote attacker to execute arbitrary commands as the CSF service account via shell command injection.\n\nThe vulnerability affects versions of the software originally distributed by ConfigServer, as well as versions of the WebPros-maintained fork that contain the vulnerable code. WebPros has addressed the vulnerability in version 16.30. Other forks or independently maintained versions of ConfigServer Security \u0026 Firewall (CSF) may also be affected and should be evaluated independently.","severity":{"version":"4.0","score":9.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.0233,"percentile":0.83651,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-78"],"published":"2026-09-10T16:24:52Z","modified":"2026-09-10T19:54:25Z","products":[{"vendor":"configserver","product":"configserver security \u0026 firewall"},{"vendor":"webpros","product":"configserver security \u0026 firewall"}],"references":[{"url":"https://support.cpanel.net/hc/en-us/articles/43387915588375-Security-CVE-2026-65638-CSF-Security-Release"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65638"},{"url":"https://github.com/advisories/GHSA-8qv3-jfg8-cjvp"}],"sources":{"cve":[{"id":"CVE-2026-65638","description":"Improper escaping of a request URL in  ConfigServer Security \u0026 Firewall allows an unauthenticated remote attacker to execute arbitrary commands as the CSF service account via shell command injection.\n\nThe vulnerability affects versions of the software originally distributed by ConfigServer, as well as versions of the WebPros-maintained fork that contain the vulnerable code. WebPros has addressed the vulnerability in version 16.30. Other forks or independently maintained versions of ConfigServer Security \u0026 Firewall (CSF) may also be affected and should be evaluated independently.","status":"published","published":"2026-09-10T16:24:52.785Z","modified":"2026-09-10T18:19:18.373Z","cvss":[{"version":"4.0","score":9.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N","level":"critical","assessor":"cna"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T13:37:13.934727Z"}],"euvd":[{"id":"EUVD-2026-75595","description":"Improper escaping of a request URL in  ConfigServer Security \u0026 Firewall allows an unauthenticated remote attacker to execute arbitrary commands as the CSF service account via shell command injection.\n\nThe vulnerability affects versions of the software originally distributed by ConfigServer, as well as versions of the WebPros-maintained fork that contain the vulnerable code. WebPros has addressed the vulnerability in version 16.30. Other forks or independently maintained versions of ConfigServer Security \u0026 Firewall (CSF) may also be affected and should be evaluated independently.","status":"published","published":"2026-09-10T16:24:52Z","modified":"2026-09-10T18:19:18Z","cvss":[{"version":"4.0","score":9.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N","level":"critical"}],"updated_at":"2026-11-02T17:28:23.831795Z"}],"ghsa":[{"id":"GHSA-8qv3-jfg8-cjvp","title":"Improper escaping of a request URL in  ConfigServer Security \u0026 Firewall allows an unauthenticated...","description":"Improper escaping of a request URL in  ConfigServer Security \u0026 Firewall allows an unauthenticated remote attacker to execute arbitrary commands as the CSF service account via shell command injection.\n\nThe vulnerability affects versions of the software originally distributed by ConfigServer, as well as versions of the WebPros-maintained fork that contain the vulnerable code. WebPros has addressed the vulnerability in version 16.30. Other forks or independently maintained versions of ConfigServer Security \u0026 Firewall (CSF) may also be affected and should be evaluated independently.","status":"published","published":"2026-09-10T18:31:46Z","modified":"2026-09-10T18:32:56Z","cvss":[{"version":"4.0","score":9.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:11:42.667371Z"}],"nvd":[{"id":"CVE-2026-65638","description":"Improper escaping of a request URL in  ConfigServer Security \u0026 Firewall allows an unauthenticated remote attacker to execute arbitrary commands as the CSF service account via shell command injection.\n\nThe vulnerability affects versions of the software originally distributed by ConfigServer, as well as versions of the WebPros-maintained fork that contain the vulnerable code. WebPros has addressed the vulnerability in version 16.30. Other forks or independently maintained versions of ConfigServer Security \u0026 Firewall (CSF) may also be affected and should be evaluated independently.","status":"published","published":"2026-09-10T17:17:05.063Z","modified":"2026-09-10T19:54:25.81Z","cvss":[{"version":"4.0","score":9.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical","assessor":"secondary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:12:46.271848Z"}]}}