CVE-2026-67350 Serendipity < 2.6.1 Open Redirect via exit.php
Unauthenticated attackers can redirect users to malicious sites via a crafted URL in Serendipity when the Track Exits plugin is configured for comment redirection.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-67350?
CVE-2026-67350 is a low-severity vulnerability in s9y Serendipity, published on 31 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-601
Which versions are affected by CVE-2026-67350?
How do I fix CVE-2026-67350?
No fix has been published for CVE-2026-67350 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-67350 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-67350 exists.
Sources
Also known as GHSA-77rw-27c5-4hxm, GHSA-xcqg-793j-q344.