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CVE-2019-16780: WordPress users with lower privileges (like contributors) can inject JavaScript code in the block editor using a specific payload, which is executed within the dashboard. This can lead to XSS if an ad

medium Affects WordPress core. Feed 2026.10.29.1, updated 2026-10-28; published ; advisory modified .

WordPress users with lower privileges (like contributors) can inject JavaScript code in the block editor using a specific payload, which is executed within the dashboard. This can lead to XSS if an ad

Package
WordPress core WordPress
Affected versions
>3.7 and <5.3.1 or =3.7
Fixed in
5.3.1
Severity
medium  CVSS 5.8
Exploitation
not on CISA KEV · EPSS 2% (77.1th percentile)
Published
2019-12-26
Source
nvd

References

CWE-79
NVD recordWordPress core 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.

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pip install phpwarden

# then
phpwarden wordpress /var/www/html

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

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