CVE-2023-28358 Cross-site scripting in Rocket.Chat

Medium 6.1 Published 11 May 2023 Updated 27 Jan 2025

Attackers can inject malicious tags via markdown in search, potentially leading to account takeover on servers with disabled CSP.

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-2023-28358?

CVE-2023-28358 is a medium-severity cross-site scripting vulnerability in Rocket.chat Rocket.chat, published on 11 May 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

A vulnerability has been discovered in Rocket.Chat where a markdown parsing issue in the "Search Messages" feature allows the insertion of malicious tags. This can be exploited on servers with content security policy disabled possible leading to some issues attacks like account takeover.

Weakness: CWE-79

Which versions are affected by CVE-2023-28358?

It affects 1 product.

Products include Rocket.chat Rocket.chat.

How do I fix CVE-2023-28358?

No fix has been published for CVE-2023-28358 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-2023-28358 being exploited?

There is no known exploitation of CVE-2023-28358 in the wild and no public exploit code.

All Rocket.chat Rocket.chat vulnerabilities

Sources

Also known as GHSA-wc38-cjg3-q72x.