CVE-2023-4423 — The WP Event Manager – Events Calendar, Registrations, Sell Tickets with WooComm

The WP Event Manager – Events Calendar, Registrations, Sell Tickets with WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in versions up to, and including, 3.1.37.1 due to insufficient input sanitization and output escaping. This ma

01What is this vulnerability?

The WP Event Manager – Events Calendar, Registrations, Sell Tickets with WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in versions up to, and including, 3.1.37.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web…

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-09-27T15:19:40.383
• Last modified: 2026-04-08T19:18:31.153

09References

• github.com — https://github.com/Jacky-Y/vuls/blob/main/vul5.md
• github.com — https://github.com/wpeventmanager/wp-event-manager/issues/1483
• plugins.trac.wordpress.org — https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new…
• www.wordfence.com — https://www.wordfence.com/threat-intel/vulnerabilities/id/dd9d22b0-a84a-4bf2-b8b…
• github.com — https://github.com/Jacky-Y/vuls/blob/main/vul5.md
• github.com — https://github.com/wpeventmanager/wp-event-manager/issues/1483
• plugins.trac.wordpress.org — https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new…
• www.wordfence.com — https://www.wordfence.com/threat-intel/vulnerabilities/id/dd9d22b0-a84a-4bf2-b8b…