CVE-2026-73671

Summary

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.

Affected Software

Weaknesses

• CWE-601: URL Redirection to Untrusted Site ('Open Redirect')

References

• https://github.com/sauruscms/Saurus-CMS-Community-Edition
• https://github.com/DevVaibhav07/VULN-POC/blob/main/Saurus_OpenRedirect.md
• https://www.vulncheck.com/advisories/saurus-cms-unauthenticated-open-redirect-via-logout-url-parameter

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