CVE-2024-21504 Cross-site Scripting in livewire/livewire
An attacker can inject malicious HTML into a user's browser session via crafted links in Livewire applications using the Url property.
- 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
- Available
What is CVE-2024-21504?
CVE-2024-21504 is a medium-severity cross-site scripting vulnerability in livewire/livewire, published on 19 Mar 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
Versions of the package livewire/livewire from 3.3.5 and before 3.4.9 are vulnerable to Cross-site Scripting (XSS) when a page uses [Url] for a property. An attacker can inject HTML code in the context of the user's browser session by crafting a malicious link and convincing the user to click on it.
Weakness: CWE-79
Which versions are affected by CVE-2024-21504?
2 open source packages ship an affected version, including livewire/livewire. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
livewire/livewire Packagist | From 3.3.5 | 3.4.9 |
livewire/livewire Packagist | From 3.3.5 | 3.4.9 |
Products include Laravel Livewire.
How do I fix CVE-2024-21504?
Upgrade livewire/livewire to 3.4.9 or later.
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-2024-21504 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-21504 exists.
Other vulnerabilities in livewire/livewire
Sources
Also known as GHSA-389c-cf87-qmwj.