What’s Vulnerable › Vulnerabilities

CVE-2024-3648: ShareThis Share Buttons <= 2.3.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via sharethis-inline-buttons Shortcode

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-23 · updated 2026-06-17
• Weakness: CWE-79

Description

The ShareThis Share Buttons plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'sharethis-inline-button' shortcode in all versions up to, and including, 2.3.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

• ShareThis Share Buttons: before 2.3.1 — fixed in 2.3.1

How to fix

Upgrade to a fixed version: ShareThis Share Buttons 2.3.1. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/changeset/3089529/sharethis-share-buttons
• https://www.wordfence.com/threat-intel/vulnerabilities/id/03b37c90-4bb5-4003-a440-3fb57a5c1cae?source=cve
• https://plugins.trac.wordpress.org/changeset/3089529/sharethis-share-buttons
• https://www.wordfence.com/threat-intel/vulnerabilities/id/03b37c90-4bb5-4003-a440-3fb57a5c1cae?source=cve

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