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

23 Oct 2026, 23:10

Type	Values Removed	Values Added
Summary		(es) Serendipity antes de la versión 2.6.1 contiene una vulnerabilidad de redirección abierta en exit.php que permite a atacantes no autenticados redirigir a los usuarios a sitios externos arbitrarios al proporcionar un parámetro url malicioso codificado en Base64 cuando el plugin Track Exits está configurado con commentredirection establecido en s9y. Los atacantes pueden crear URLs de apariencia confiable aprovechando el dominio legítimo del blog para llevar a cabo phishing, entregar malware o eludir filtros de reputación de URL.

Information

Published : 2026-07-31 15:18

Updated : 2026-10-23 23:10

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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