CVE-2026-1434 Reflected XSS in Omega-PSIR
Reflected XSS in Omega-PSIR allows attackers to execute arbitrary JavaScript in victims' browsers via a malicious URL.
- 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-2026-1434?
CVE-2026-1434 is a medium-severity cross-site scripting vulnerability in Politechnika Warszawska Omega-PSIR, published on 27 Feb 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
Omega-PSIR is vulnerable to Reflected XSS via the lang parameter. An attacker can craft a malicious URL that, when opened, causes arbitrary JavaScript to execute in the victim’s browser.
This issue was fixed in 4.6.7.
Weakness: CWE-79
Which versions are affected by CVE-2026-1434?
It affects 1 product.
Products include Pw Omega-Psir.
How do I fix CVE-2026-1434?
No fix has been published for CVE-2026-1434 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-2026-1434 being exploited?
There is no known exploitation of CVE-2026-1434 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-74gw-c73g-6fq2.