CVE-2023-1159: The Bookly plugin for WordPress is vulnerable to Stored Cross-Site Scripting via service titles in versions up to, and including, 21.5 due to insufficient input sanitization and output escaping. This

medium Affects bookly-responsive-appointment-booking-tool (WordPress plugin). Feed 2026.10.29.1, updated 2026-10-28; published ; advisory modified .

The Bookly plugin for WordPress is vulnerable to Stored Cross-Site Scripting via service titles in versions up to, and including, 21.5 due to insufficient input sanitization and output escaping. This

Package
bookly-responsive-appointment-booking-tool (WordPress plugin) WordPress
Affected versions
<=21.7
Fixed in
no fix recorded
Severity
medium  CVSS 4.0
Exploitation
not on CISA KEV · EPSS 0% (31.2th percentile)
Published
2023-06-02
Source
nvd

References

CWE-79
NVD recordbookly-responsive-appointment-booking-tool (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