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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.020 (80.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
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
- www.wordfence.com/vulnerability-advisories/ (Third Party Advisory)
- www.wordfence.com/blog/2021/10/vulnerability-patched-in-sassy-social-share-plug… (Exploit, Third Party Advisory)
- plugins.trac.wordpress.org/changeset/2600464/sassy-social-share/trunk/admin/cla… (Patch, Third Party Advisory)
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.