What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.5 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-10-21 · updated 2026-06-17
• Weakness: CWE-502

Description

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.

Affected products

• heateor Social Sharing Plugin – Sassy Social Share: 3.3.23

References

• https://plugins.trac.wordpress.org/changeset/2600464/sassy-social-share/trunk/admin/class-sassy-social-share-admin.php
• https://www.wordfence.com/blog/2021/10/vulnerability-patched-in-sassy-social-share-plugin/
• https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39321
• https://plugins.trac.wordpress.org/changeset/2600464/sassy-social-share/trunk/admin/class-sassy-social-share-admin.php
• https://www.wordfence.com/blog/2021/10/vulnerability-patched-in-sassy-social-share-plugin/
• https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39321

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