CVE-2021-24357

Name: CVE-2021-24357
Creator: NVD / NIST
Published: 2021-06-14T14:15:08.877+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.62%

Last modified Jun 17, 2026

CVE-2021-24357 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. In the Best Image Gallery & Responsive Photo Gallery – FooGallery WordPress plugin before 2.0.35, the Custom CSS field of each gallery is not properly sanitised or validated before being being output in the page where the gallery is embed, leading to a stored Cross-Site Scripting issue.. EPSS estimates a 0.62% chance of exploitation in the next 30 days.

Description

In the Best Image Gallery & Responsive Photo Gallery – FooGallery WordPress plugin before 2.0.35, the Custom CSS field of each gallery is not properly sanitised or validated before being being output in the page where the gallery is embed, leading to a stored Cross-Site Scripting issue.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.62%

45.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Fooplugins	Foogallery	< 2.0.35

References

https://wpscan.com/vulnerability/950f46ae-4476-4969-863a-0e55752953b3Exploit, Third Party Advisory
https://wpscan.com/vulnerability/950f46ae-4476-4969-863a-0e55752953b3Exploit, Third Party Advisory

Timeline

Published: Jun 14, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-24357?

How severe is CVE-2021-24357?

CVE-2021-24357 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.62% probability of exploitation in the next 30 days.

How do I fix CVE-2021-24357?

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-2021-24357?

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

Scan your code now

Source: NVD / NIST