CVE-2023-4110 PHP Jabbers Availability Booking Calendar index.php cross site scripting

Low 3.5 Published 3 Aug 2023 Updated 10 Oct 2024

Remote attackers can execute arbitrary scripts via the session_id parameter in the Availability Booking Calendar index.php file.

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-2023-4110?

CVE-2023-4110 is a low-severity cross-site scripting vulnerability in PHP Jabbers Availability Booking Calendar, published on 3 Aug 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

A vulnerability has been found in PHP Jabbers Availability Booking Calendar 5.0 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file /index.php. The manipulation of the argument session_id leads to cross site scripting. The attack can be launched remotely. The identifier VDB-235957 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-79

Which versions are affected by CVE-2023-4110?

It affects 1 product.

Products include Phpjabbers Availability Booking Calendar.

How do I fix CVE-2023-4110?

No fix has been published for CVE-2023-4110 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-2023-4110 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-4110 exists.

Public exploit code: 1 Nuclei template.

Sources

Also known as GHSA-6384-2m2x-45v7.