PT-2026-45723 · Simple Sa · Wirtualna Uczelnia

Published 2026-06-02 · Updated 2026-06-02 · CVE-2026-34906

Mitre

CVSS v4.0

9.3

Critical

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L

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

Fix

Weakness Enumeration

CWE-1336

Related Identifiers

CVE-2026-34906

Affected Products

Wirtualna Uczelnia

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-34906 · Security Note
• https://cert.pl/posts/2026/06/CVE-2026-34906 · Note
• https://simple.com.pl/branze/edukacyjna · Note