WordPress Share Buttons Plugin – AddThis

WordPress Share Buttons Plugin – AddThis has 4 disclosed vulnerabilities in the WordSec catalog, reported between 2011 and 2015; all 4 are fixed as of September 2026. Their average CVSS score is 6.8, and the most serious one scores 9.8 out of 10. Severity breakdown: 1 critical and 0 high. 2015 was the busiest year with 3 disclosures.

The most common weakness is Cross-Site Scripting, behind 3 of the records (75%). Other recurring categories include Code Injection.

Every one of the 4 issues recorded for WordPress Share Buttons Plugin – AddThis has a vendor fix available, so running the current release closes all known holes.

2 independent researchers contributed these findings, one record each.

Strategic Overview

Avg CVSSMedium

6.8/ 10

Patch Coverage100%

Open

Fixed

Get automatic notifications for all WordPress Share Buttons Plugin – AddThis vulnerabilities before they are exploited.

Highest severity on recordCVSS 9.8

WordPress Share Buttons Plugin – AddThis < 2.2.0 - Code Injection

Read the full analysis

Vulnerability Records

4 records


2015-08-11 00:00	AddThis Sharing Buttons <= 5.0.12 - Authenticated Cross-Site Scripting WordPress Share Buttons Plugin < 5.0.13	`CVE-2015-9439`	4.8 Medium	Marcin Probola	Yes
2015-08-11 00:00	AddThis <= 5.0.12 - Cross-Site Scripting WordPress Share Buttons Plugin < 5.0.13	`N/A`	6.1 Medium	Anonymous	Yes
2015-06-10 00:00	AddThis <= 5.0.2 - Authenticated Stored Cross-Site Scripting WordPress Share Buttons Plugin < 5.0.3	`N/A`	6.4 Medium	James Hooker	Yes
2011-06-21 00:00	WordPress Share Buttons Plugin – AddThis < 2.2.0 - Code Injection WordPress Share Buttons Plugin < 2.2.0	`N/A`	9.8 Critical	Anonymous	Yes

Showing 1–4 of 4 reports