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Paper/Archive/CVE-2026-34906

CVE-2026-34906

Simple SA Wirtualna Uczelnia — Server-Side Template Injection (SSTI) in Wirtualna Uczelnia

EPSS 0.6%CVSS 9.3
critical.is priorityof 100
37
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 46.5.465 × 209.3No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

Affected

ProductAffectedFixed inSource
Wirtualna Uczelnia≤ wu#2016.437.295#0#20260327_105545–CNA

Scores by source

CERT-PL (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

writeupcert.pl/posts/2026/06/CVE-2026-34906refsimple.com.pl/branze/edukacyjna