CVE-2021-24187: SEO Redirection < 6.4 - Authenticated Reflected Cross-Site Scripting (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: 2021-04-05 · updated 2026-06-17
Weakness: CWE-79

Description

The setting page of the SEO Redirection Plugin - 301 Redirect Manager WordPress plugin before 6.4 is vulnerable to reflected Cross-Site Scripting (XSS) as user input is not properly sanitised before being output in an attribute.

Affected products

WP-buy SEO Redirection Plugin – 301 Redirect Manager (WordPress plugin): before 6.4 — fixed in 6.4

How to fix

Upgrade to a fixed version: WP-buy SEO Redirection Plugin – 301 Redirect Manager (WordPress plugin) 6.4. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/c234700e-61dd-46a0-90fb-609e704269a9
https://wpscan.com/vulnerability/c234700e-61dd-46a0-90fb-609e704269a9

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