CVE-2023-50833 WordPress Colibri Page Builder Plugin <= 1.0.239 is vulnerable to Cross Site Scripting (XSS)

What is CVE-2023-50833?

CVE-2023-50833 is a medium-severity cross-site scripting vulnerability in ExtendThemes Colibri Page Builder, published on 21 Dec 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ExtendThemes Colibri Page Builder allows Stored XSS.This issue affects Colibri Page Builder: from n/a through 1.0.239.

Weakness: CWE-79

Which versions are affected by CVE-2023-50833?

It affects 1 product.

Products include Extendthemes Colibri Page Builder.

How do I fix CVE-2023-50833?

No fix has been published for CVE-2023-50833 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2023-50833 being exploited?

There is no known exploitation of CVE-2023-50833 in the wild and no public exploit code.

Other vulnerabilities in ExtendThemes Colibri Page Builder

• CVE-2023-2188 Colibri Page Builder <= 1.0.227 - Authenticated (Administrator+) SQL Injection via post_id High 7.2
• CVE-2025-32185 WordPress Colibri Page Builder plugin <= 1.0.329 - Cross Site Scripting (XSS) vulnerability Medium 6.5
• CVE-2024-4451 Cross-site scripting in Colibri Page Builder Medium 6.4
• CVE-2024-5038 Colibri Page Builder <= 1.0.276 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Medium 6.4
• CVE-2024-3337 Cross-site scripting in Colibri Page Builder Medium 6.4

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-9xgp-crr8-rrpg.