CVE-2021-24640

Name: CVE-2021-24640
Creator: NVD / NIST
Published: 2021-09-20T10:15:09.607+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.60%

Last modified Jun 17, 2026

CVE-2021-24640 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. The WordPress Slider Block Gutenslider plugin before 5.2.0 does not escape the minWidth attribute of a Gutenburg block, which could allow users with a role as low as contributor to perform Cross-Site Scripting attacks. EPSS estimates a 0.60% chance of exploitation in the next 30 days.

Description

The WordPress Slider Block Gutenslider plugin before 5.2.0 does not escape the minWidth attribute of a Gutenburg block, which could allow users with a role as low as contributor to perform Cross-Site Scripting attacks

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

0.60%

44.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Gutenslider	Gutenslider	< 5.2.0

References

https://wpscan.com/vulnerability/e61dd498-5d0e-45ce-b660-a36c576f8d78Exploit, Third Party Advisory
https://wpscan.com/vulnerability/e61dd498-5d0e-45ce-b660-a36c576f8d78Exploit, Third Party Advisory

Timeline

Published: Sep 20, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-24640?

How severe is CVE-2021-24640?

CVE-2021-24640 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.60% probability of exploitation in the next 30 days.

How do I fix CVE-2021-24640?

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-2021-24640?

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

Scan your code now

Source: NVD / NIST