Vulnerability · Published Jun 2, 2026 · Assigned by CERT-PL

CVE-2026-34907Reflected Cross-Site Scripting (XSS) in Wirtualna Uczelnia

Medium 5.1

In plain English

A medium-severity cross-site scripting in Wirtualna Uczelnia from Simple SA. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities).

Severity (CVSS 4.0)5.1Medium

Exploit odds (30 days)0.3%top 78.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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

Affected products (as reported)

Vendor	Product	Versions
Simple SA	Wirtualna Uczelnia	0 – through wu#2016.437.295#0#20260327_105545

Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

References

https://cert.pl/posts/2026/06/CVE-2026-34906 third-party-advisory
https://simple.com.pl/branze/edukacyjna/ product