CVE-2021-47962 Savsoft Quiz 5.0 Persistent Cross-Site Scripting via User Settings
Authenticated attackers can inject malicious scripts into user profile fields, leading to code execution in victims' browsers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-47962?
CVE-2021-47962 is a medium-severity cross-site scripting vulnerability in savsofts Savsoft Quiz, published on 15 May 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Savsoft Quiz 5.0 contains a persistent cross-site scripting vulnerability in the user account settings page that allows authenticated attackers to inject malicious HTML and JavaScript code. Attackers can inject script payloads into user profile fields at the edit_user endpoint, which execute in the browsers of users viewing the affected profile after submission.
Weakness: CWE-79
Which versions are affected by CVE-2021-47962?
How do I fix CVE-2021-47962?
No fix has been published for CVE-2021-47962 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-2021-47962 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47962 exists.
Sources
Also known as GHSA-234g-j3mr-6rvx.