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CVE-2026-34906 is a server-side template injection (SSTI) vulnerability in Simple SA's Wirtualna Uczelnia. The flaw is present in the redirectToUrl endpoint, specifically in handling of the redirectUrlParameter parameter. Insufficient input validation allows an attacker to inject arbitrary template expressions that are evaluated on the server. Because the injected expressions execute within the server-side template engine context, an unauthenticated remote attacker can achieve remote code execution. The issue affects Wirtualna Uczelnia versions up to and including wu#2016.437.295#0#20260327_105545.
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A server-side template injection vulnerability in Wirtualna Uczelnia that allows unauthenticated remote code execution via the redirectToUrl endpoint and redirectUrlParameter parameter due to insufficient input validation.
A server-side template injection vulnerability in Wirtualna Uczelnia that allows unauthenticated remote code execution via the redirectToUrl endpoint and redirectUrlParameter parameter.
A server-side template injection vulnerability in Simple SA Wirtualna Uczelnia that allows unauthenticated remote code execution via the redirectToUrl endpoint and redirectUrlParameter parameter.
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Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.