XSS in Google XML Sitemaps Project

CVE-2021-25088

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)

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.006 (43.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2021-25088?
CVE-2021-25088 is a medium-severity vulnerability in Google XML Sitemaps Project, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2022-06-20.
How severe is CVE-2021-25088?
Medium severity. CVSS v3 base score is 4.8 out of 10.
Is CVE-2021-25088 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.