CVE-2023-41049 Improper Neutralization of Script in Attributes in @dcl/single-sign-on-client
Attackers can execute arbitrary JavaScript via the init function in the Decentraland single sign-on client library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-41049?
CVE-2023-41049 is a high-severity cross-site scripting vulnerability in decentraland single-sign-on-client, published on 1 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
@dcl/single-sign-on-client is an open source npm library which deals with single sign on authentication flows. Improper input validation in the `init` function allows arbitrary javascript to be executed using the `javascript:` prefix. This vulnerability has been patched on version `0.1.0`. Users are advised to upgrade. Users unable to upgrade should limit untrusted user input to the `init` function.
Weakness: CWE-79
Which versions are affected by CVE-2023-41049?
2 open source packages ship an affected version, including @dcl/single-sign-on-client. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
@dcl/single-sign-on-client npm | All versions | 0.1.0 |
@dcl/single-sign-on-client npm | All versions | 0.1.0 |
Products include Decentraland Single Sign on Client.
How do I fix CVE-2023-41049?
Upgrade @dcl/single-sign-on-client to 0.1.0 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-2023-41049 being exploited?
There is no known exploitation of CVE-2023-41049 in the wild and no public exploit code.
Sources
Also known as GHSA-vp4f-wxgw-7x8x.