CVE-2026-67350

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.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/s9y/Serendipity/security/advisories/GHSA-77rw-27c5-4hxm
https://www.vulncheck.com/advisories/serendipity-open-redirect-via-exit-php
https://github.com/s9y/Serendipity/security/advisories/GHSA-77rw-27c5-4hxm

Configurations

No configuration.

History

No history.

Information

Published : 2026-07-31 15:18

Updated : 2026-09-09 20:35

NVD link : CVE-2026-67350

Mitre link : CVE-2026-67350

CVE.ORG link : CVE-2026-67350

JSON object : View

Products Affected

No product.

CWE

CWE-601

URL Redirection to Untrusted Site ('Open Redirect')

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