CVE-2021-39321 HIGH

CVE-2021-39321: Sassy Social Share 3.3.23 PHP Object Injection

Vendor Sassy Social Share
Product Sassy Social Share
Weakness CWE-863 · Incorrect authorization
Published October 21, 2021
Last update March 31, 2025

CVSS base score

8.8/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Version 3.3.23 of the Sassy Social Share WordPress plugin is vulnerable to PHP Object Injection via the wp_ajax_heateor_sss_import_config AJAX action due to deserialization of unvalidated user supplied inputs via the import_config function found in the ~/admin/class-sassy-social-share-admin.php file. This can be exploited by underprivileged authenticated users due to a missing capability check on the import_config function.

Explanation of Vulnerability in Simple Terms

02Summary

Sassy Social Share versions 3.3.23 and earlier contain an authorization flaw that allows authenticated users with low privileges to read, modify, or delete data they should not have access to. The vulnerability affects confidentiality, integrity, and availability of site data. Administrators should update to a version newer than 3.3.23 immediately.

What an attacker can do

03Attacker Capabilities

Read, modify, or delete sensitive site data without proper authorization.

Potential impact on your site

04Site Impact

Authenticated users can access or alter data beyond their intended permissions, risking data breach or site defacement.

Conditions required to exploit

05Prerequisites

Attacker must have a low-privilege authenticated account on the site.

Key dates

06Disclosure timeline

October 21, 2021 CVE published
March 31, 2025 Record updated

Related vulnerabilities

08Related CVE