s9y/serendipity vulnerabilities

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CVE-IDSeverityPackage summary
CVE-2026-39971Highs9y/serendipity: Serendipity has a Host Header Injection allows SMTP header injection via unvalidated HTTP_HOST in Message-ID email headerCVE-2026-39963Mediums9y/serendipity: Serendipity has a Host Header Injection allows authentication cookie scoping to attacker-controlled domain in functions_config.inc.php

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