CVE-2021-24977

Name: CVE-2021-24977
Creator: NVD / NIST
Published: 2022-02-28T09:15:08.337+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 1.47%

Last modified Jun 17, 2026

CVE-2021-24977 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. The Use Any Font | Custom Font Uploader WordPress plugin before 6.2.1 does not have any authorisation checks when assigning a font, allowing unauthenticated users to sent arbitrary CSS which will then be processed by the frontend for all users. Due to the lack of sanitisation and escaping in the backend, it could also lead to Stored XSS issues. EPSS estimates a 1.47% chance of exploitation in the next 30 days.

Description

The Use Any Font | Custom Font Uploader WordPress plugin before 6.2.1 does not have any authorisation checks when assigning a font, allowing unauthenticated users to sent arbitrary CSS which will then be processed by the frontend for all users. Due to the lack of sanitisation and escaping in the backend, it could also lead to Stored XSS issues

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

1.47%

70.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Dineshkarki	Use Any Font	< 6.2.1

References

https://wpscan.com/vulnerability/739831e3-cdfb-4a22-9abf-6c594d7e3d75Exploit, Third Party Advisory
https://wpscan.com/vulnerability/739831e3-cdfb-4a22-9abf-6c594d7e3d75Exploit, Third Party Advisory

Timeline

Published: Feb 28, 2022
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2021-24977?

How severe is CVE-2021-24977?

CVE-2021-24977 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 1.47% probability of exploitation in the next 30 days.

How do I fix CVE-2021-24977?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-24977?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST