CVE-2022-22682 Cross-site scripting in Synology Calendar

Medium 6.5 Published 12 Jul 2022 Updated 17 Sep 2024

Remote authenticated users can inject arbitrary web script or HTML into Synology Calendar, potentially leading to session hijacking or malicious actions.

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-2022-22682?

CVE-2022-22682 is a medium-severity cross-site scripting vulnerability in Synology Calendar, published on 12 Jul 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Improper neutralization of input during web page generation ('Cross-site Scripting') vulnerability in Event Management in Synology Calendar before 2.4.5-10930 allows remote authenticated users to inject arbitrary web script or HTML via unspecified vectors.

Weakness: CWE-79

Which versions are affected by CVE-2022-22682?

It affects 1 product.

Products include Synology Calendar.

How do I fix CVE-2022-22682?

No fix has been published for CVE-2022-22682 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-2022-22682 being exploited?

There is no known exploitation of CVE-2022-22682 in the wild and no public exploit code.

Sources

Also known as GHSA-42p8-93qx-mrrc.