CVE-2017-20118 TrueConf Server DOM cross site scripting

Low 3.5 Published 29 Jun 2022 Updated 15 Apr 2025

Remote attackers can execute arbitrary scripts in the TrueConf Server admin interface via DOM-based cross-site scripting.

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-2017-20118?

CVE-2017-20118 is a low-severity cross-site scripting vulnerability in TrueConf Server, published on 29 Jun 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

A vulnerability was found in TrueConf Server 4.3.7. It has been rated as problematic. Affected by this issue is some unknown functionality of the file /admin/conferences/list/. The manipulation of the argument domxss leads to basic cross site scripting (DOM). The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

Weakness: CWE-79, CWE-80

Which versions are affected by CVE-2017-20118?

It affects 1 product.

Products include Trueconf Server.

How do I fix CVE-2017-20118?

No fix has been published for CVE-2017-20118 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-2017-20118 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-20118 exists.

Sources

Also known as GHSA-3m77-wvgm-wjf3.