CVE-2021-24934 Visual CSS Style Editor < 7.5.4 - Reflected Cross-Site Scripting
An attacker can execute arbitrary scripts in an admin's browser via the wyp_page_type parameter, potentially leading to account takeover.
- 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-2021-24934?
CVE-2021-24934 is a medium-severity cross-site scripting vulnerability in Unknown Visual CSS Style Editor, published on 1 Feb 2022. 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 Visual CSS Style Editor WordPress plugin before 7.5.4 does not sanitise and escape the wyp_page_type parameter before outputting it back in an admin page, leading to a Reflected Cross-Site Scripting issue
Weakness: CWE-79
Which versions are affected by CVE-2021-24934?
It affects 1 product.
Products include Yellowpencil Visual Css Style Editor.
How do I fix CVE-2021-24934?
No fix has been published for CVE-2021-24934 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-2021-24934 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-24934 exists.
Public exploit code: 1 Nuclei template.
Other vulnerabilities in Unknown Visual CSS Style Editor
Sources
Also known as GHSA-7579-2v4g-9grv.