{"id":"CVE-2026-100720","title":"Froxlor 2.0.0 through 2.3.10 is vulnerable to stored cross-site scripting","summary":"Froxlor 2.0.0 through 2.3.10 is vulnerable to stored cross-site scripting. When a customer (the lowest-privileged authenticated role) uploads an SSL certificate for one of their own domains, the Certificates API add()/update() methods pa…","severity":"high","cvss":8.7,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","cwe":["CWE-79"],"vendor":"froxlor","product":"froxlor","affected":["froxlor >= 2.0.0 < 2.3.12"],"published":"2026-09-26","updated":"2026-09-26","sourceUpdated":"2026-09-26T14:16:58.340","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-100720","references":[{"url":"https://github.com/froxlor/froxlor/security/advisories/GHSA-89vj-gqqr-73p8","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/froxlor-before-2.3.12-stored-xss-via-ssl-certificate-issuer","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-26T13:33:20.890Z","slug":"CVE-2026-100720","body":"## Overview\n\nFroxlor 2.0.0 through 2.3.10 is vulnerable to stored cross-site scripting. When a customer (the lowest-privileged authenticated role) uploads an SSL certificate for one of their own domains, the Certificates API add()/update() methods parse it with openssl_x509_parse() and store the issuer organization (issuer['O']) value verbatim without sanitization. Froxlor's table-listing renderer then emits scalar cells through Twig's `raw` filter, disabling HTML auto-escaping, so when an administrator or reseller opens Domains > SSL certificates the attacker-supplied issuer value executes as script in the privileged user's session. This crosses a privilege boundary from customer to admin and can result in full administrator account takeover; because a Froxlor admin controls webserver, DNS, and PHP configuration applied by a cron job running as root, the issue can be further escalated to command execution as root on the managed server. The issue is fixed in Froxlor 2.3.12.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":47.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}