CVE-2023-23898 MEDIUM

CVE-2023-23898: WordPress Blocksy Companion Plugin <= 1.8.67 is vulnerable to Cross Site Scripting (XSS)

Vendor Creativethemes

Product Blocksy Companion

Weakness CWE-79 · XSS

Published April 6, 2023

Last update April 28, 2026

View on NVD All CVEs

CVSS base score

5.5/10

Attack vector Network

Attack complexity High

Privileges required Low

User interaction Required

Confidentiality Low

Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:H/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 CreativeThemes Blocksy Companion plugin <= 1.8.67 versions.

Explanation of Vulnerability in Simple Terms

02Summary

Blocksy Companion versions up to 1.8.67 contain a cross-site scripting (XSS) vulnerability that allows an authenticated attacker to inject malicious scripts. The vulnerability requires user interaction—typically a victim clicking a crafted link—and affects the site's integrity and confidentiality. Update to a version newer than 1.8.67 to remediate.

What an attacker can do

03Attacker Capabilities

Inject malicious scripts that execute in other users' browsers when they visit a crafted page.

Potential impact on your site

04Site Impact

Authenticated users' sessions and data can be compromised if they interact with attacker-crafted content.

Conditions required to exploit

05Prerequisites

Attacker must have a low-privilege account; victim must click a malicious link or visit an attacker-controlled page.

Key dates

06Disclosure timeline

April 6, 2023 CVE published

April 28, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2023-23898 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html AskarLabs — CWE-79 write-up Cross-Site Scripting

Related vulnerabilities

Identifiers

CVE CVE-2023-23898

CWE CWE-79

CVSS 5.5 / MEDIUM

Affected versions