CVE-2021-25088: The XML Sitemaps WordPress plugin before 4.1.3 does not sanitise and escape a settings before outputting it in

Q: How do I fix CVE-2021-25088?

google xml sitemaps: upgrade to 4.1.3. Exact commands for each OS are on this page.

Q: Is CVE-2021-25088 being exploited?

CVE-2021-25088 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-25088 affect?

CVE-2021-25088 affects google xml sitemaps. Severity is medium (CVSS 4.8). 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 capa

Q: How urgent is CVE-2021-25088?

Priority 34/100. Public exploit reference

Routine

MEDIUM 4.8UPGRADE

CVE-2021-25088 is a medium-severity flaw (CVSS 4.8) affecting google xml sitemaps. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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)

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.6% (top 52%)
CISA exploited list	No
Weakness	CWE-79
Published	2022-06-20
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: google xml sitemaps project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-06-20 11:15 UTCPublished CVE record published
2026-06-17 03:41 UTCUpdated Record last modified

google xml sitemaps project google xml sitemaps UPGRADE

Affected: < 4.1.3

Fixed in: 4.1.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy google-xml-sitemaps || rpm -q google-xml-sitemaps || google-xml-sitemaps --version

2. UPGRADE to 4.1.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade google-xml-sitemaps

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade google-xml-sitemaps

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-25088?

google xml sitemaps: upgrade to 4.1.3. Exact commands for each OS are on this page.

Is CVE-2021-25088 being exploited?

CVE-2021-25088 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-25088 affect?

CVE-2021-25088 affects google xml sitemaps. Severity is medium (CVSS 4.8). 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 capa

How urgent is CVE-2021-25088?

Priority 34/100. Public exploit reference

Software pages

WordPress vulnerabilities

References

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