CVE-2023-33564 Cross-site scripting in n/a

Medium 6.1 Published 1 Aug 2023 Updated 21 Oct 2024

Cross-site scripting in the theme parameter allows attackers to inject malicious scripts into the booking calendar interface.

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-2023-33564?

CVE-2023-33564 is a medium-severity cross-site scripting vulnerability in n/a, published on 1 Aug 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

There is a Cross Site Scripting (XSS) vulnerability in the "theme" parameter of preview.php in PHPJabbers Time Slots Booking Calendar v3.3.

Weakness: CWE-79

Which versions are affected by CVE-2023-33564?

It affects 1 product.

Products include Phpjabbers Time Slots Booking Calendar.

How do I fix CVE-2023-33564?

No fix has been published for CVE-2023-33564 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-2023-33564 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-33564 exists.

Sources

Also known as GHSA-gm67-v86v-m657.