CVE-2021-24782 Flex Local Fonts <= 1.0.0 - Admin+ Stored Cross-Site-Scripting
High-privilege users can inject malicious scripts via the font class name field in the Flex Local Fonts WordPress plugin.
- 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-2021-24782?
CVE-2021-24782 is a medium-severity cross-site scripting vulnerability in Unknown Flex Local Fonts, published on 13 Dec 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
The Flex Local Fonts WordPress plugin through 1.0.0 does not escape the Class Name field when adding a font, which could allow hight privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed.
Weakness: CWE-79
Which versions are affected by CVE-2021-24782?
It affects 1 product.
Products include Flex Local Fonts Project Flex Local Fonts.
How do I fix CVE-2021-24782?
No fix has been published for CVE-2021-24782 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-2021-24782 being exploited?
There is no known exploitation of CVE-2021-24782 in the wild and no public exploit code.
Sources
Also known as GHSA-fp4x-73jw-phj9.