CVE-2024-9865

EventPrime – Modern Events Calendar, Bookings and Tickets <= 4.0.4.7 - Unauthenticated Stored Cross-Site Scripting via Transaction Log

2024-10-23 00:00
zer0gh0st

Strategic Overview

Status
Patched in 4.0.4.8
Affected Plugin
EventPrime – Events Calendar, Bookings, Tickets & AI
Affected Version
<= 4.0.4.7
CVSS
6.1Medium
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2024-9865
View all EventPrime – Events Calendar, Bookings, Tickets & AI vulnerabilities

At a glance

CVE-2024-9865 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the EventPrime WordPress plugin, affecting versions <= 4.0.4.7. It carries a CVSS score of 6.1 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 4.0.4.8; sites on affected versions should update now. Disclosed October 2024, reported by zer0gh0st.

Vulnerability Overview

The EventPrime – Events Calendar, Bookings and Tickets plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘ep_booking_attendee_fields’ fields in all versions up to, and including, 4.0.4.7 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses the transaction log for a booking.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site.

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

EventPrime <= 4.0.4.7 carries this weakness at ep_booking_attendee_fields, and reaching it takes no account at all. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For EventPrime the fix is 4.0.4.8: builds <= 4.0.4.7 are affected, anything from 4.0.4.8 onward is not.

Remediation

Update to version 4.0.4.8, or a newer patched version

How does WordSec protect against this?

Requests carrying this pattern arrive without a session, so nothing upstream of the firewall gets a chance to reject them: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: EventPrime 4.0.4.8 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2024-9865https://www.wordfence.com/threat-intel/vulnerabilities/id/18ded977-5297-4b6f-b9f3-0567f995d08ahttps://nvd.nist.gov/vuln/detail/CVE-2024-9865

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C