CVE-2021-24640: Gutenslider < 5.2.0 - Contributor+ Stored XSS

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-09-20 · updated 2026-06-17
Weakness: CWE-79

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

Affected products

WordPress Slider Block Gutenslider: before 5.2.0 — fixed in 5.2.0

How to fix

Upgrade to a fixed version: WordPress Slider Block Gutenslider 5.2.0. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/e61dd498-5d0e-45ce-b660-a36c576f8d78
https://wpscan.com/vulnerability/e61dd498-5d0e-45ce-b660-a36c576f8d78

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