{"schema_version":1,"title":"S9y Serendipity vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 3 vulnerabilities in S9y Serendipity: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-39971, was published on 15 April 2026.","url":"https://junglewise.ai/threats/technologies/s9y-serendipity-1","json_url":"https://junglewise.ai/threats/technologies/s9y-serendipity-1.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/s9y-serendipity-1","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","thin":true,"counts":{"high":2,"all_time":3,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":0,"last_365_days":3},"latest":[{"cve":"CVE-2026-39971","cvss":7.2,"epss":0.0026,"slug":"cve-2026-39971-serendipity-has-a-host-header-injection-allows-smtp-header","title":"Serendipity has a Host Header Injection allows SMTP header injection via unvalidated HTTP_HOST in Message-ID email header","severity":"high","exploited":false,"published_at":"2026-04-15T04:17:39.763+00:00","url":"https://junglewise.ai/threats/cve-2026-39971-serendipity-has-a-host-header-injection-allows-smtp-header"},{"cve":"CVE-2026-39963","cvss":6.9,"epss":0.0022,"slug":"cve-2026-39963-serendipity-host-header-injection-in-serendipity-setcookie","title":"Serendipity Host Header Injection in serendipity_setCookie","severity":"medium","exploited":false,"published_at":"2026-04-15T04:17:39.58+00:00","url":"https://junglewise.ai/threats/cve-2026-39963-serendipity-host-header-injection-in-serendipity-setcookie"},{"cve":"CVE-2024-58282","cvss":7.2,"epss":0.0102,"slug":"cve-2024-58282-serendipity-2-5-0-contains-a-remote-code-execution-vulnerability","title":"Serendipity 2.5.0 contains a remote code execution vulnerability that allows authenticated administrators to upload…","severity":"high","exploited":false,"published_at":"2025-12-10T22:16:20.1+00:00","url":"https://junglewise.ai/threats/cve-2024-58282-serendipity-2-5-0-contains-a-remote-code-execution-vulnerability"}],"weekly":[{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-05","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-12","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-19","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-26","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-11-02","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-11-09","critical":0,"exploited":0,"vulnerabilities":0}],"related":[],"technology":{"hub":true,"name":"S9y Serendipity","slug":"s9y-serendipity-1","vendor":{"hub":true,"name":"S9y","slug":"s9y","url":"https://junglewise.ai/threats/vendors/s9y"},"aliases":[],"description":"Lightweight PHP-based content management and blogging engine.","url":"https://junglewise.ai/threats/technologies/s9y-serendipity-1"},"most_severe":[{"cve":"CVE-2024-58282","cvss":7.2,"epss":0.0102,"slug":"cve-2024-58282-serendipity-2-5-0-contains-a-remote-code-execution-vulnerability","title":"Serendipity 2.5.0 contains a remote code execution vulnerability that allows authenticated administrators to upload…","severity":"high","exploited":false,"published_at":"2025-12-10T22:16:20.1+00:00","url":"https://junglewise.ai/threats/cve-2024-58282-serendipity-2-5-0-contains-a-remote-code-execution-vulnerability"},{"cve":"CVE-2026-39971","cvss":7.2,"epss":0.0026,"slug":"cve-2026-39971-serendipity-has-a-host-header-injection-allows-smtp-header","title":"Serendipity has a Host Header Injection allows SMTP header injection via unvalidated HTTP_HOST in Message-ID email header","severity":"high","exploited":false,"published_at":"2026-04-15T04:17:39.763+00:00","url":"https://junglewise.ai/threats/cve-2026-39971-serendipity-has-a-host-header-injection-allows-smtp-header"},{"cve":"CVE-2026-39963","cvss":6.9,"epss":0.0022,"slug":"cve-2026-39963-serendipity-host-header-injection-in-serendipity-setcookie","title":"Serendipity Host Header Injection in serendipity_setCookie","severity":"medium","exploited":false,"published_at":"2026-04-15T04:17:39.58+00:00","url":"https://junglewise.ai/threats/cve-2026-39963-serendipity-host-header-injection-in-serendipity-setcookie"}],"generated_at":"2026-11-09T03:07:00.176479+00:00"}