CVE-2020-15926 Cross-site scripting in n/a

Medium 6.1 Published 18 Aug 2020 Updated 4 Aug 2024

Attackers can execute arbitrary code on client systems by sending specially crafted messages in Rocket.Chat channels or direct messages.

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-2020-15926?

CVE-2020-15926 is a medium-severity cross-site scripting vulnerability in Rocket.chat Rocket.chat, published on 18 Aug 2020. 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

Rocket.Chat through 3.4.2 allows XSS where an attacker can send a specially crafted message to a channel or in a direct message to the client which results in remote code execution on the client side.

Weakness: CWE-79

Which versions are affected by CVE-2020-15926?

It affects 1 product.

Products include Rocket.chat Rocket.chat.

How do I fix CVE-2020-15926?

No fix has been published for CVE-2020-15926 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-2020-15926 being exploited?

There is no known exploitation of CVE-2020-15926 in the wild and no public exploit code.

All Rocket.chat Rocket.chat vulnerabilities

Sources

Also known as GHSA-r5wc-mg37-wmg8.