CVE-2021-25088: Google XML Sitemaps < 4.1.3 - Admin+ Stored Cross-Site Scripting

Severity: medium (CVSS 4.8 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: 2022-06-20 · updated 2026-06-17
Weakness: CWE-79

Description

The XML Sitemaps WordPress plugin before 4.1.3 does not sanitise and escape a settings before outputting it in the Debug page, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)

Affected products

XML Sitemaps: before 4.1.3 — fixed in 4.1.3

How to fix

Upgrade to a fixed version: XML Sitemaps 4.1.3. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/820c51d6-186e-4d63-b4a7-bd0a59c02cc8
https://wpscan.com/vulnerability/820c51d6-186e-4d63-b4a7-bd0a59c02cc8

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