Auth bypass in Heateor Sassy Social Share
CVE-2021-39321
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.
Vulnerability class: Insecure Deserialization
EPSS: 0.020 (78.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Heateor Sassy_social_share — versions 3.3.23
- Sassy Social Share — versions 3.3.23
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@wordfence.com (Third Party Advisory, x_refsource_MISC)
- security@wordfence.com (Exploit, Third Party Advisory, x_refsource_MISC)
- security@wordfence.com (Patch, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-39321?
- CVE-2021-39321 is a high-severity vulnerability in Heateor Sassy Social Share, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2021-10-21.
- How severe is CVE-2021-39321?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2021-39321 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.