CVE-2021-24533 Maintenance < 4.03 - Authenticated Stored XSS
High-privilege users can inject stored XSS payloads into plugin settings, affecting frontend 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-2021-24533?
CVE-2021-24533 is a medium-severity cross-site scripting vulnerability in Unknown Maintenance, published on 23 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 Maintenance WordPress plugin before 4.03 does not sanitise or escape some of its settings, allowing high privilege users such as admin to se Cross-Site Scripting payload in them (even when the unfiltered_html capability is disallowed), which will be triggered in the frontend
Weakness: CWE-79
Which versions are affected by CVE-2021-24533?
It affects 1 product.
Products include Webfactoryltd Maintenance.
How do I fix CVE-2021-24533?
No fix has been published for CVE-2021-24533 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-2021-24533 being exploited?
There is no known exploitation of CVE-2021-24533 in the wild and no public exploit code.
Sources
Also known as GHSA-w4v9-jmhm-6jw4.