Open Redirect in Saurus Cms Community Edition
CVE-2026-73671
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.
Vulnerability class: Open Redirect
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (21.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Saurus Cms Community Edition — versions 0
Weakness classification (CWE)
References
- github.com/DevVaibhav07/VULN-POC/blob/main/Saurus_OpenRedirect.md (technical-description)
- github.com/sauruscms/Saurus-CMS-Community-Edition (product)
- www.vulncheck.com/advisories/saurus-cms-unauthenticated-open-redirect-via-logou… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-73671?
- CVE-2026-73671 is a medium-severity vulnerability in Saurus Cms Community Edition, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2026-08-13.
- How severe is CVE-2026-73671?
- Medium severity. CVSS v3 base score is 6.1 out of 10.