CVE-2026-73671

Description

Saurus CMS Community Edition contains an unauthenticated open redirect vulnerability in the logout handling code in classes/port.inc.php, where the url parameter supplied via GET or POST is passed directly to the Location header without domain allowlist, scheme validation, or relative path enforcement. Attackers can craft a malicious logout URL containing an arbitrary external domain or javascript: URI scheme to redirect authenticated users to attacker-controlled phishing pages after session destruction, enabling credential theft and OAuth redirect abuse.

References

https://www.vulncheck.com/advisories/saurus-cms-unauthenticated-open-redirect-via-logout-url-parameter

https://github.com/sauruscms/Saurus-CMS-Community-Edition

https://github.com/DevVaibhav07/VULN-POC/blob/main/Saurus_OpenRedirect.md

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4

EPSS