phpwarden
FeaturesComparePricingAdvisoriesBlogDocsChangelogLog in
Log inStart free

CVE-2021-24393: A c GET parameter of the Comment Highlighter WordPress plugin through 0.13 is not properly sanitised, escaped or validated before inserting to a SQL statement, leading to SQL injection.

high Affects comment-highlighter (WordPress plugin). Feed 2026.10.29.3, updated 2026-10-29; published ; advisory modified .

A c GET parameter of the Comment Highlighter WordPress plugin through 0.13 is not properly sanitised, escaped or validated before inserting to a SQL statement, leading to SQL injection.

Package
comment-highlighter (WordPress plugin) WordPress
Affected versions
<=0.13
Fixed in
no fix recorded
Severity
high  CVSS 7.2
Exploitation
not on CISA KEV · EPSS 2% (74.9th percentile)
Published
2021-09-06
Source
nvd

References

CWE-89
NVD recordcomment-highlighter (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