CVE-2026-73671

MEDIUM 6.1

Saurus CMS Unauthenticated Open Redirect via logout url parameter

CVSS Score

6.1

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-601
Vendor	saurus
Product	saurus cms community edition
Published	Aug 13, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

Saurus / Saurus CMS Community Edition

0 ≤ d886e5b

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

Vaibhav Kubade