CVE-2024-38354 Cross-site Scripting in Hackmd.io Notes lead by HTML Injection

High 8.1 Published 10 Jul 2024 Updated 2 Aug 2024

Attackers can execute arbitrary scripts in victim browsers via unsanitized HTML injection in CodiMD notebook features.

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-2024-38354?

CVE-2024-38354 is a high-severity cross-site scripting vulnerability in hackmdio codimd, published on 10 Jul 2024. 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

CodiMD allows realtime collaborative markdown notes on all platforms. The notebook feature of Hackmd.io permits the rendering of iframe `HTML` tags with an improperly sanitized `name` attribute. This vulnerability enables attackers to perform cross-site scripting (XSS) attacks via DOM clobbering. This vulnerability is fixed in 2.5.4.

Weakness: CWE-79

Which versions are affected by CVE-2024-38354?

It affects 1 product.

Products include Hackmd Codimd.

How do I fix CVE-2024-38354?

No fix has been published for CVE-2024-38354 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-2024-38354 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-38354 exists.

Sources

Also known as GHSA-22jv-vch8-2vp9.