CVE-2026-73671

Published: Aug 13, 2026Modified: Aug 31, 2026Deferred

5.1

Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less

Source: disclosure@vulncheck.com (Secondary)

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.

Related CWEs

CWE-601

URL Redirection to Untrusted Site ('Open Redirect')

A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks.

References (4)

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

Source: disclosure@vulncheck.com

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

Source: disclosure@vulncheck.com

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

Source: disclosure@vulncheck.com

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

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.