CVE-2024-3338

Colibri Page Builder <= 1.0.262 - Authenticated (Author+) Stored Cross-Site Scripting

2024-04-22 00:00
stealthcopter

Strategic Overview

Status
Patched in 1.0.264
Affected Plugin
Colibri Page Builder
Affected Version
<= 1.0.262
CVSS
4.4Medium
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2024-3338
View all Colibri Page Builder vulnerabilities

At a glance

CVE-2024-3338 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Colibri Page Builder WordPress plugin, affecting versions <= 1.0.262. It carries a CVSS score of 4.4 (reachable over the network). Exploitation requires an authenticated account at Author level or above. The issue is fixed in version 1.0.264; sites on affected versions should update now. Disclosed April 2024, reported by stealthcopter.

Vulnerability Overview

The Colibri Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via image alt data parameter in all versions up to, and including, 1.0.262 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Technical Analysis

The vector marks this flaw as remotely reachable over the network.

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

Reaching this weakness in Colibri Page Builder <= 1.0.262 takes an account at Author level or above. 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 Colibri Page Builder the fix is 1.0.264: builds <= 1.0.262 are affected, anything from 1.0.264 onward is not.

Remediation

Update to version 1.0.264, or a newer patched version

How does WordSec protect against this?

An attacker needs Author access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Colibri Page Builder 1.0.264 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2024-3338https://www.wordfence.com/threat-intel/vulnerabilities/id/3a066eae-4040-4d76-b730-47d98dc37662https://nvd.nist.gov/vuln/detail/CVE-2024-3338

Related records

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