CVE-2023-5238

EventPrime < 3.2.0 - Reflected HTML Content Injection

2023-10-09 00:00

Strategic Overview

Status: Patched in 3.2.0
Affected Plugin: EventPrime – Events Calendar, Bookings, Tickets & AI
Affected Version: < 3.2.0
CVSS: 4.3Medium
Weakness type: CWE-74 · Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CVE: CVE-2023-5238

View all EventPrime – Events Calendar, Bookings, Tickets & AI vulnerabilities

At a glance

CVE-2023-5238 is a medium-severity Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in the EventPrime WordPress plugin, affecting versions < 3.2.0. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 3.2.0; sites on affected versions should update now. Disclosed October 2023, reported by Miguel Santareno.

Vulnerability Overview

The EventPrime – Events Calendar, Bookings and Tickets plugin for WordPress is vulnerable to Reflected HTML Content Injection via the search parameter in all versions up to 3.2.0 (exclusive) due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web content in search pages if they can successfully trick a user into performing an action such as clicking on a link.

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-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.

Remediation

Update to version 3.2.0, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to EventPrime: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: EventPrime 3.2.0 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-5238 https://www.wordfence.com/threat-intel/vulnerabilities/id/ed881d06-e652-45ac-8f56-c2db9e403485 https://nvd.nist.gov/vuln/detail/CVE-2023-5238

Related records

Other vulnerabilities in EventPrime – Events Calendar, Bookings, Tickets & AI

CVSS Vector

4.3

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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