CVE-2021-24518 WPFront Notification Bar < 2.0.0.07176 - Authenticated Stored XSS
Authenticated admins can inject stored XSS payloads via the Custom CSS setting in the WPFront Notification Bar plugin, potentially compromising site visitors.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-24518?
CVE-2021-24518 is a medium-severity cross-site scripting vulnerability in Unknown WPFront Notification Bar, published on 16 Aug 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
The WPFront Notification Bar WordPress plugin before 2.0.0.07176 does not sanitise or escape its Custom CSS setting, allowing high privilege users such as admin to set XSS payload in it even when the unfiltered_html capability is disallowed, leading to an authenticated Stored Cross-Site Scripting issue
Weakness: CWE-79
Which versions are affected by CVE-2021-24518?
It affects 1 product.
Products include Wpfront Notification Bar.
How do I fix CVE-2021-24518?
No fix has been published for CVE-2021-24518 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-2021-24518 being exploited?
There is no known exploitation of CVE-2021-24518 in the wild and no public exploit code.
Sources
Also known as GHSA-xq6f-vw46-2gmq.