CVE-2026-34907 Reflected Cross-Site Scripting (XSS) in Wirtualna Uczelnia
Attackers can execute arbitrary JavaScript in victims' browsers via a malicious URL, potentially leading to session hijacking or data theft.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-34907?
CVE-2026-34907 is a medium-severity cross-site scripting vulnerability in Simple SA Wirtualna Uczelnia, published on 2 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
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
Weakness: CWE-79
Which versions are affected by CVE-2026-34907?
How do I fix CVE-2026-34907?
No fix has been published for CVE-2026-34907 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-34907 being exploited?
There is no known exploitation of CVE-2026-34907 in the wild and no public exploit code.
Sources
Also known as GHSA-vxh9-pjmh-2356.