CVE-2025-66845 Cross-site scripting in n/a
Attackers can execute arbitrary JavaScript in victims' browsers via the user_name endpoint, 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-2025-66845?
CVE-2025-66845 is a medium-severity cross-site scripting vulnerability in n/a, published on 23 Dec 2025. 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
A reflected Cross-Site Scripting (XSS) vulnerability has been identified in TechStore version 1.0. The user_name endpoint reflects the id query parameter directly into the HTML response without output encoding or sanitization, allowing execution of arbitrary JavaScript code in a victim’s browser.
Weakness: CWE-79
Which versions are affected by CVE-2025-66845?
It affects 1 product.
Products include Nooncarlett Techstore.
How do I fix CVE-2025-66845?
No fix has been published for CVE-2025-66845 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-2025-66845 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-66845 exists.
Other vulnerabilities in n/a
Sources
Also known as GHSA-4p2q-qc9w-jq74.