CVE-2023-23898

WordPress Blocksy Companion Plugin <= 1.8.67 is vulnerable to Cross Site Scripting (XSS)

Severity Score

5.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

NVD
Wordfence

Auth. (contributor+) Stored Cross-Site Scripting (XSS) vulnerability in CreativeThemes Blocksy Companion plugin <= 1.8.67 versions.

The Blocksy Companion plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's blocksy_posts
shortcode in versions up to, and including, 1.8.67 due to insufficient input sanitization and output escaping on user supplied 'class' attribute. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

*Credits: Rafshanzani Suhada (Patchstack Alliance)

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2023-01-19 CVE Reserved
2023-01-27 CVE Published
2024-04-12 EPSS Updated
2024-08-02 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

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

CAPEC

CAPEC-592: Stored XSS

References (1)

URL	Tag	Source
https://patchstack.com/database/vulnerability/blocksy-companion/wordpress-blocksy-companion-plugin-1-8-67-cross-site-scripting-xss-vulnerability?_s_id=cve	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Creativethemes Search vendor "Creativethemes"		Blocksy Companion Search vendor "Creativethemes" for product "Blocksy Companion"				< 1.8.68 Search vendor "Creativethemes" for product "Blocksy Companion" and version " < 1.8.68"		wordpress		Affected