Sassy Social Share 3.3.23 — Object Injection
CVE-2021-39321Published · Updated Action summary
Affected: 3.3.23 – 3.3.23Update to 3.3.24 or newer
All remediation steps- Severity
- High8.8
- CVSS
- 8.8CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Weakness
- CWE-502 PHP Object Injection
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Social Sharing Plugin – Sassy Social Share sassy-social-share
- Affected3.3.23 – 3.3.23
- Patched in3.3.24
Update to 3.3.24 or newer.
You are affected if you run 3.3.23 – 3.3.23. Version 3.3.24 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Social Sharing Plugin – Sassy Social Share.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 3.3.24, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Social Sharing Plugin – Sassy Social Share to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Chloe Chamberland.
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.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Social Sharing Plugin – Sassy Social Share
All 12| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤3.3.79No patch available | CVE-2026-94170 | |
| Medium6.1 | Reflected Cross-Site Scripting via 'heateor_mastodon_share' Parameter ≤3.3.75Update to 3.3.76 | CVE-2025-5528 | |
| Medium6.1 | Open Redirect ≤3.3.73Update to 3.3.74 | CVE-2025-39404 | |
| Medium6.1 | Reflected Cross-Site Scripting via heateor_mastodon_share Parameter ≤3.3.69Update to 3.3.70 | CVE-2024-11252 | |
| Medium4.4 | Authenticated (Administrator+) Stored Cross-Site Scripting ≤3.3.62Update to 3.3.63 | CVE-2024-4924 |
- High7.2Unauthenticated Stored Cross-Site Scripting
≤3.3.79No patch available
- Medium6.1Reflected Cross-Site Scripting via 'heateor_mastodon_share' Parameter
≤3.3.75Update to 3.3.76
- Medium6.1Open Redirect
≤3.3.73Update to 3.3.74
- Medium6.1Reflected Cross-Site Scripting via heateor_mastodon_share Parameter
≤3.3.69Update to 3.3.70
- Medium4.4Authenticated (Administrator+) Stored Cross-Site Scripting
≤3.3.62Update to 3.3.63
Same weakness (PHP Object Injection)
All PHP Object Injection| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup
≤5.25.25Update to 5.26.45
- Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder
≤1.0.2Update to 1.1
- Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System
≤3.3.9Update to 3.4.0
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity high, CVSS 8.8
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.