CVE-2021-24563 Frontend Uploader <= 1.3.2 - Unauthenticated Stored Cross-Site Scripting
Unauthenticated attackers can upload malicious HTML files containing JavaScript, leading to stored cross-site scripting when accessed.
- 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-2021-24563?
CVE-2021-24563 is a medium-severity cross-site scripting vulnerability in Unknown Frontend Uploader, published on 11 Oct 2021. 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
The Frontend Uploader WordPress plugin through 1.3.2 does not prevent HTML files from being uploaded via its form, allowing unauthenticated user to upload a malicious HTML file containing JavaScript for example, which will be triggered when someone access the file directly
Weakness: CWE-79
Which versions are affected by CVE-2021-24563?
It affects 1 product.
Products include Frontend Uploader Project Frontend Uploader.
How do I fix CVE-2021-24563?
No fix has been published for CVE-2021-24563 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-2021-24563 being exploited?
There is no known exploitation of CVE-2021-24563 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry and 1 proofs of concept on GitHub.
Other vulnerabilities in Unknown Frontend Uploader
Sources
Also known as GHSA-287r-36rw-cfgc.