CVE-2021-25019: SEO Plugin by Squirrly SEO < 11.1.12 - Reflected Cross-Site Scripting

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-03-21 · updated 2026-06-17
Weakness: CWE-79

Description

The SEO Plugin by Squirrly SEO WordPress plugin before 11.1.12 does not escape the type parameter before outputting it back in an attribute in an admin page, leading to a Reflected Cross-Site Scripting

Affected products

SEO Squirrly SEO Plugin by Squirrly SEO: before 11.1.12 — fixed in 11.1.12

How to fix

Upgrade to a fixed version: SEO Squirrly SEO Plugin by Squirrly SEO 11.1.12. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/cea0ce4b-886a-47cc-8653-a297e9759d09
https://wpscan.com/vulnerability/cea0ce4b-886a-47cc-8653-a297e9759d09

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