CVE•Published 2023-07-01•Modified 2026-04-08•1 article on news•6 live references•NVD data

CVE-2021-4401Analogwp · Style_kits

Vulnerability data via NVD (ingested)

CVSS v3.1

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS percentile

Exploit Prediction Scoring System · top 49% of all CVEs

Weaknesses (CWE)

CWE-352Cross-Site Request Forgery (CSRF)

Description

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.

Timeline

Published 2023-07-01

Modified 2026-04-08

External references

NVD MITRE Exploit-DB GitHub PoC trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2021-4401

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · WP plugin path

http.html:"/wp-content/plugins/style-kits/"

Matches any site loading the "style-kits" plugin — doesn't rely on Shodan's vuln tag.

Shodan · product

product:"Analogwp Style Kits"

All exposed Analogwp Style Kits instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Style Kits"

HTTP body or banner mentions "Style Kits" — catches deploys Shodan didn't identify as a product.