phpwarden
FeaturesComparePricingAdvisoriesBlogDocsChangelogLog in
Log inStart free

CVE-2021-24159: Due to the lack of sanitization and lack of nonce protection on the custom CSS feature, an attacker could craft a request to inject malicious JavaScript on a site using the Contact Form 7 Style WordPr

high Affects contact-form-7-style (WordPress plugin). Feed 2026.10.29.1, updated 2026-10-28; published ; advisory modified .

Due to the lack of sanitization and lack of nonce protection on the custom CSS feature, an attacker could craft a request to inject malicious JavaScript on a site using the Contact Form 7 Style WordPr

Package
contact-form-7-style (WordPress plugin) WordPress
Affected versions
<=3.1.9
Fixed in
no fix recorded
Severity
high  CVSS 8.8
Exploitation
not on CISA KEV · EPSS 1% (48.2th percentile)
Published
2021-04-05
Source
nvd

References

CWE-352
NVD recordcontact-form-7-style (WordPress plugin) advisories

Am I affected?

Find out in one command. phpwarden checks your WordPress install against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# PHP projects (recommended)
composer require --dev phpwarden/phpwarden
# then
vendor/bin/phpwarden wordpress /var/www/html

# or, without Composer
pipx install phpwarden   &&   phpwarden wordpress /var/www/html

Or keep it checked automatically with the GitHub Action or a nightly cron; see WordPress docs.

Install docs   How findings are ranked

Related advisories