{"id":"CVE-2026-17577","revision":"b105e9bd3b984bd99b66b3c4814d46b5","records":[{"revision":"b105e9bd3b984bd99b66b3c4814d46b5","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-17577","aliases":[],"title":"SSL Zen <= 4.7.42 - Reflected Cross-Site Scripting via 'uri' Parameter","description":"The SSL Zen plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'uri' (and 'host') parameters in versions up to, and including, 4.7.42. The ssl_zen_messages::getMessages() function builds the 'token_missmatch' message using base64_decode(sanitize_text_field($_REQUEST['uri'])) and (optionally) base64_decode(sanitize_text_field($_REQUEST['host'])). sanitize_text_field() cannot strip HTML/JavaScript that is hidden inside a base64-encoded blob, and the resulting decoded raw HTML is echoed unescaped by showMessage() . This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a specially crafted link.","state":0,"publishedAt":"2026-09-25T07:40:25.55+00:00","modifiedAt":"2026-09-25T10:31:39.758+00:00","affected":[{"ecosystem":"Vendor product","name":"SSL Zen — SSL Certificate Installer & HTTPS Redirects","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"sslzen\",\n                    \"product\": \"SSL Zen — SSL Certificate Installer & HTTPS Redirects\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"lessThanOrEqual\": \"4.7.42\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1,"severity":"MEDIUM"}],"references":["https://www.wordfence.com/threat-intel/vulnerabilities/id/20816039-0b1c-420a-b5f4-b5370d0331da?source=cve","https://plugins.trac.wordpress.org/browser/ssl-zen/tags/4.7.14/ssl_zen/classes/class.ssl_zen_messages.php#L44","https://plugins.trac.wordpress.org/browser/ssl-zen/tags/4.7.42/ssl_zen/classes/class.ssl_zen_admin.php#L863","https://plugins.trac.wordpress.org/browser/ssl-zen/tags/4.7.42/ssl_zen/classes/class.ssl_zen_messages.php#L44","https://plugins.trac.wordpress.org/browser/ssl-zen/tags/4.7.14/ssl_zen/classes/class.ssl_zen_admin.php#L863","https://plugins.trac.wordpress.org/changeset?reponame=&old=3701590%40ssl-zen&new=3701590%40ssl-zen"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-17577","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-17577","identifiers":["CVE-2026-17577"]},"retained":false,"historicalAffected":[]}],"coverage":[]}