CVE-2021-4401: The Style Kits plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and includi

Q: How do I fix CVE-2021-4401?

style kits: upgrade to newer than 1.8.0. Exact commands for each OS are on this page.

Q: Is CVE-2021-4401 being exploited?

CVE-2021-4401 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-2021-4401 affect?

CVE-2021-4401 affects style kits. Severity is high (CVSS 8.8). The Style Kits plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.8.0. This is due to missing or incorrect nonce validation on the update_posts_stylekit() function. This makes it possible fo

This month

HIGH 8.8UPGRADE

CVE-2021-4401 is a high-severity flaw (CVSS 8.8) affecting style kits. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Style Kits plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.8.0. This is due to missing or incorrect nonce validation on the update_posts_stylekit() function. This makes it possible for unauthenticated attackers to update style kits for posts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.5% (top 55%)
CISA exploited list	No
Weakness	CWE-352
Published	2023-07-01
Last modified	2026-06-17

Publisher (CNA): Wordfence · Vendor: analogwp

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

Am I affected?

Timeline

2023-07-01 06:15 UTCPublished CVE record published
2026-06-17 04:19 UTCUpdated Record last modified

analogwp style kits UPGRADE

Affected: <= 1.8.0

Fixed in: newer than 1.8.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy style-kits || rpm -q style-kits || style-kits --version

2. UPGRADE to newer than 1.8.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade style-kits

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade style-kits

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-2021-4401?

style kits: upgrade to newer than 1.8.0. Exact commands for each OS are on this page.

Is CVE-2021-4401 being exploited?

CVE-2021-4401 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-2021-4401 affect?

CVE-2021-4401 affects style kits. Severity is high (CVSS 8.8). The Style Kits plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.8.0. This is due to missing or incorrect nonce validation on the update_posts_stylekit() function. This makes it possible fo

How urgent is CVE-2021-4401?

Priority 42/100. High severity

Software pages

WordPress vulnerabilities

References

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