Is s9y/serendipity vulnerable?

Composer s9y/serendipity has 2 known advisories in the phpwarden feed. Feed 2026.10.29.1, updated 2026-10-28.

2advisories

0critical

0on CISA KEV

0no fix recorded

CVE	Title	Severity	CVSS	Affected	Fixed in
CVE-2026-39971	Serendipity has a Host Header Injection allows SMTP header injection via unvalidated HTTP_HOST in Message-ID email header	high	7.2	`<2.6.0`	`2.6.0`
CVE-2026-39963	Serendipity has a Host Header Injection allows authentication cookie scoping to attacker-controlled domain in functions_config.inc.php	medium	6.9	`<2.6.0`	`2.6.0`

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