CVE-2024-56510 Marp Core allows XSS by improper neutralization of HTML sanitization
An attacker can execute arbitrary scripts via improper HTML sanitization in Marp Core, affecting users rendering untrusted Markdown presentations.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2024-56510?
CVE-2024-56510 is a medium-severity cross-site scripting vulnerability in marp-team marp-core, published on 26 Dec 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
@marp-team/marp-core is the core for Marp, which is the ecosystem to write your presentation with plain Markdown. Marp Core from v3.0.2 to v3.9.0 and v4.0.0, are vulnerable to cross-site scripting (XSS) due to improper neutralization of HTML sanitization. Marp Core v3.9.1 and v4.0.1 have been patched to fix that. If you are unable to update the package immediately, disable all HTML tags by setting html: false option in the Marp class constructor.
Weakness: CWE-79
Which versions are affected by CVE-2024-56510?
4 open source packages ship an affected version, including @marp-team/marp-core.
| Package | Affected | Fixed in |
|---|---|---|
@marp-team/marp-core npm | From 3.0.2 | 3.9.1 |
@marp-team/marp-core npm | From 3.0.2 | 3.9.1 |
@marp-team/marp-core npm | From 4.0.0 | 4.0.1 |
@marp-team/marp-core npm | From 4.0.0 | 4.0.1 |
How do I fix CVE-2024-56510?
Upgrade @marp-team/marp-core to a fixed version for your release line: 3.9.1 or 4.0.1.
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-2024-56510 being exploited?
There is no known exploitation of CVE-2024-56510 in the wild and no public exploit code.
Sources
Also known as GHSA-x52f-h5g4-8qv5.