Blog2Social: Social Media Auto Post & Scheduler <= 6.3.0 — Authenticated SQL Injection
CVE-2021-24137Published · Updated Action summary
Affected: ≤6.3.0Update to 6.3.1 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-89 SQL Injection
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Blog2Social: Social Media Auto Post & Scheduler blog2social
- Affected≤ 6.3.0
- Patched in6.3.1
Update to 6.3.1 or newer.
You are affected if you run ≤ 6.3.0. Version 6.3.1 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Blog2Social: Social Media Auto Post & Scheduler.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 6.3.1, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Blog2Social: Social Media Auto Post & Scheduler to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Nguyen Anh Tien.
Unvalidated input in the Blog2Social WordPress plugin, versions before 6.3.1, lead to SQL Injection in the Re-Share Posts feature, allowing authenticated users to inject arbitrary SQL commands.
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 Blog2Social: Social Media Auto Post & Scheduler
All 30| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium4.3 | Authenticated (Contributor+) Insecure Direct Object Reference to Sensitive Information Exposure ≤9.1.4Update to 9.1.5 | CVE-2026-108092 | |
| Medium4.3 | Missing Authorization to Authenticated (Contributor+) Arbitrary Modification via Multiple AJAX Handlers ≤9.1.0Update to 9.1.1 | CVE-2026-92829 | |
| Medium4.3 | Missing Authorization ≤9.0.0Update to 9.1.0 | CVE-2026-89030 | |
| Medium4.3 | Insecure Direct Object Reference ≤9.0.0Update to 9.1.0 | CVE-2026-89031 | |
| Medium4.3 | Authenticated (Subscriber+) Username Enumeration ≤9.0.0Update to 9.1.0 | CVE-2026-89029 |
- Medium4.3Authenticated (Contributor+) Insecure Direct Object Reference to Sensitive Information Exposure
≤9.1.4Update to 9.1.5
- Medium4.3Missing Authorization to Authenticated (Contributor+) Arbitrary Modification via Multiple AJAX Handlers
≤9.1.0Update to 9.1.1
- Medium4.3Missing Authorization
≤9.0.0Update to 9.1.0
- Medium4.3Insecure Direct Object Reference
≤9.0.0Update to 9.1.0
- Medium4.3Authenticated (Subscriber+) Username Enumeration
≤9.0.0Update to 9.1.0
Same weakness (SQL Injection)
All SQL 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.