CVE-2021-41930 Cross-site scripting in n/a

Medium 6.1 Published 24 Jan 2022 Updated 4 Aug 2024

Attackers can execute arbitrary code via XSS in the vaccination scheduler system's addSchedule.php endpoint.

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-2021-41930?

CVE-2021-41930 is a medium-severity cross-site scripting vulnerability in n/a, published on 24 Jan 2022. 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

Cross site scripting (XSS) vulnerability in Sourcecodester Online Covid Vaccination Scheduler System v1 by oretnom23, allows attackers to execute arbitrary code via the lid parameter to /scheduler/addSchedule.php.

Weakness: CWE-79

Which versions are affected by CVE-2021-41930?

It affects 1 product.

Products include Online Covid Vaccination Scheduler System Project Online Covid Vaccination Scheduler System.

How do I fix CVE-2021-41930?

No fix has been published for CVE-2021-41930 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-2021-41930 being exploited?

There is no known exploitation of CVE-2021-41930 in the wild and no public exploit code.

Sources

Also known as GHSA-hjqh-wfr8-g74q.