CVE-2023-40669 MEDIUM

CVE-2023-40669: WordPress Collapse-O-Matic Plugin <= 1.8.5.5 is vulnerable to Cross Site Scripting (XSS)

Vendor Twinpictures, Baden03
Product Collapse-O-Matic
Weakness CWE-79 · XSS
Published September 27, 2023
Last update April 28, 2026
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Auth. (contributor+) Stored Cross-Site Scripting (XSS) vulnerability in twinpictures, baden03 Collapse-O-Matic plugin <= 1.8.5.5 versions.

Explanation of Vulnerability in Simple Terms

02Summary

Collapse-O-Matic versions up to 1.8.5.5 contain a cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious scripts. An attacker with low-level site access can craft a request that, when visited by another user, executes arbitrary JavaScript in their browser. This can lead to session hijacking, credential theft, or unauthorized actions performed on behalf of the victim.

What an attacker can do

03Attacker Capabilities

Inject and execute malicious JavaScript in other users' browsers to steal sessions, credentials, or perform unauthorized actions.

Potential impact on your site

04Site Impact

Authenticated users with low privileges can compromise other users' accounts or perform actions as them; scope extends beyond the plugin.

Conditions required to exploit

05Prerequisites

Attacker must have low-level authenticated access to the site; victim must visit a crafted link or page.

Key dates

06Disclosure timeline

September 27, 2023 CVE published
April 28, 2026 Record updated

Related vulnerabilities

08Related CVE

CVE-2026-65503 WordPress Ultimate Store Kit Elementor Addons plugin <= 3.0.5 - Cross Site Scripting (XSS) vulnerability CVE-2026-65492 WordPress Dokan Pro plugin <= 5.0.0 - Cross Site Scripting (XSS) vulnerability CVE-2026-65763 Joomla Extension - phoca.cz - Reflected XSS vulnerability in Phoca Maps 5.0.0-6.0.4 CVE-2026-65762 Joomla Extension - phoca.cz - Reflected XSS vulnerability in Phoca Guestbook 5.0.0-6.1.0 CVE-2026-15393 Cozy Blocks <= 2.2.11 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'postMeta.font.size' Block Attribute