CVE-2026-67350
MEDIUM
NVD
CVSS Score
4.3
Severity
MEDIUM
Published
Jul 31, 2026
Vendor
unknown
Description
Serendipity before 2.6.1 contains an open redirect vulnerability in exit.php that allows unauthenticated attackers to redirect users to arbitrary external sites by supplying a malicious Base64-encoded url parameter when the Track Exits plugin is configured with commentredirection set to s9y. Attackers can craft trusted-looking URLs leveraging the legitimate blog domain to conduct phishing, deliver malware, or bypass URL reputation filters.