EUVD-2026-58111
GHSA-jjjg-67rc-qf87
Severity by source
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
Network-accessible with no auth or config prerequisites; requires victim to follow crafted link (UI:R); scope changes as redirect targets external systems beyond the vulnerable application.
Primary rating from Vendor (vulncheck).
CVSS VectorVendor: vulncheck
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
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
Open redirect in Saurus CMS Community Edition's logout handler allows unauthenticated attackers to redirect authenticated users to attacker-controlled domains or javascript: URIs immediately after session destruction. The vulnerability exists in classes/port.inc.php, where the url GET/POST parameter is passed unsanitized into the HTTP Location header with no allowlist, scheme check, or path restriction. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No server-side configuration or feature flag is required - the vulnerability affects the default logout flow of any Saurus CMS Community Edition installation. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 5.1 (AV:N/AC:L/AT:N/PR:N/UI:A) is well-calibrated for this class of vulnerability: network-accessible with no authentication or configuration prerequisites, but gated entirely on active user interaction (UI:A - victim must follow a crafted link). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker crafts a logout URL such as https://target-site.com/logout?url=https://attacker.com/fake-login pointing to a pixel-accurate phishing replica of the target's login page, then delivers it to authenticated users via a phishing email or malicious hyperlink. A publicly available POC on GitHub documents this technique. … |
| Remediation | No vendor-released patched version has been identified at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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