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CVE-2026-34906

Server-Side Template Injection (SSTI) in Wirtualna Uczelnia

Server-Side Template Injection (SSTI) in Wirtualna Uczelnia allows an unauthenticated attacker to perform Remote Code Execution (RCE). In the endpoint redirectToUrl and parameter redirectUrlParameter, insufficient input validation permits injection of arbitrary template expressions that are executed on the server. Successful exploitation can allow an attacker to run remote commands, including establishing a reverse shell. This issue affects Wirtualna Uczelnia versions up to wu#2016.437.295#0#20260327_105545

CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed
Vendors
Simple Sa
Products
Wirtualna Uczelnia
CVE-2026-34907

Reflected Cross-Site Scripting (XSS) in Wirtualna Uczelnia

Wirtualna Uczelnia is vulnerable to Reflected Cross‑Site Scripting (XSS) due to insecure handling of the locale parameter across multiple endpoints. An attacker can craft a malicious URL with JavaScript embedded in the locale parameter and send it to a victim. When the victim opens the link, the injected script will be executed in their browser. This issue affects Wirtualna Uczelnia versions up to wu#2016.437.295#0#20260327_105545

CVSS 4.0 · 5.1 Medium EPSS < 1% KEV · Not listed
Vendors
Simple Sa
Products
Wirtualna Uczelnia
CVE-2025-12140

RCE in Wirtualna Uczelnia

The application contains an insecure 'redirectToUrl' mechanism that incorrectly processes the value of the 'redirectUrlParameter' parameter. The application interprets the entered string of characters as a Java expression, allowing an unauthenticated attacer to perform arbitrary code execution. This issue was fixed in version wu#2016.1.5513#0#20251014_113353

CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed
Vendors
Simple Sa
Products
Wirtualna Uczelnia