CVE-2020-10196: An XSS vulnerability in the popup-builder plugin before 3.64.1 for WordPress allows remote attackers to inject arbitrary JavaScript into existing popups via an unsecured ajax action in com/classes/Aja

medium Affects popup-builder (WordPress plugin). Feed 2026.10.29.1, updated 2026-10-28; published ; advisory modified .

An XSS vulnerability in the popup-builder plugin before 3.64.1 for WordPress allows remote attackers to inject arbitrary JavaScript into existing popups via an unsecured ajax action in com/classes/Aja

Package
popup-builder (WordPress plugin) WordPress
Affected versions
<3.64.1
Fixed in
3.64.1
Severity
medium  CVSS 6.1
Exploitation
not on CISA KEV · EPSS 1% (72.7th percentile)
Published
2020-03-13
Source
nvd

References

CWE-79
NVD recordpopup-builder (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.

# one-time install
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.

Install docs   How findings are ranked

Related advisories