MainWP Child <= 4.1.7.1 — SQL Injection via orderby, order Parameters
CVE-2021-24877Published · Updated Action summary
Affected: <4.1.8Update to 4.1.8 or newer
All remediation steps- Severity
- High7.2
- CVSS
- 7.2CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:HPrivileges required- High
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?
MainWP Child – Securely Connects to the MainWP Dashboard to Manage Multiple Sites mainwp-child
- Affected< 4.1.8
- Patched in4.1.8
Update to 4.1.8 or newer.
You are affected if you run < 4.1.8. Version 4.1.8 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under MainWP Child – Securely Connects to the MainWP Dashboard to Manage Multiple Sites.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 4.1.8, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch MainWP Child – Securely Connects to the MainWP Dashboard to Manage Multiple Sites to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to ZhongFu Su.
The MainWP Child WordPress plugin before 4.1.8 does not validate the orderby and order parameter before using them in a SQL statement, leading to an SQL injection exploitable by high privilege users such as admin when the Backup and Staging by WP Time Capsule plugin is installed
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 MainWP Child – Securely Connects to the MainWP Dashboard to Manage Multiple Sites
All 9| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High8.1 | Unauthenticated PHP Object Injection ≤6.2.1Update to 6.2.2 | CVE-2026-105436 | |
| Medium5.3 | Missing Authorization ≤6.1.1Update to 6.1.2 | CVE-2026-27366 | |
| High8.1 | Missing Authorization to Unauthenticated Privilege Escalation ≤5.3.3Update to 5.3.4 | CVE-2024-10783 | |
| Medium5.9 | Information Disclosure via Back-Up Files ≤4.4.1.1Update to 4.4.1.2 | CVE-2023-3132 | |
| High8.3 | Authentication Bypass <3.4.5Update to 3.4.5 | — |
- High8.1Unauthenticated PHP Object Injection
≤6.2.1Update to 6.2.2
- Medium5.3Missing Authorization
≤6.1.1Update to 6.1.2
- High8.1Missing Authorization to Unauthenticated Privilege Escalation
≤5.3.3Update to 5.3.4
- Medium5.9Information Disclosure via Back-Up Files
≤4.4.1.1Update to 4.4.1.2
- High8.3Authentication Bypass
<3.4.5Update to 3.4.5
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 7.2
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.