CVE-2023-23012 Cross-site scripting in n/a

Medium 6.1 Published 20 Jan 2023 Updated 3 Apr 2025

Attackers can execute arbitrary code via XSS in the Classroom Bookings application through the bgcol input field.

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-2023-23012?

CVE-2023-23012 is a medium-severity cross-site scripting vulnerability in n/a, published on 20 Jan 2023. 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 craigrodway classroombookings 2.6.4 allows attackers to execute arbitrary code or other unspecified impacts via the input bgcol in file Weeks.php.

Weakness: CWE-79

Which versions are affected by CVE-2023-23012?

It affects 1 product.

Products include Classroombookings Classroombookings.

How do I fix CVE-2023-23012?

No fix has been published for CVE-2023-23012 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-2023-23012 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-23012 exists.

Sources

Also known as GHSA-v3wm-hvwx-j6vw.