Page Builder: KingComposer < 2.8.2 — Authenticated Stored Cross-Site Scripting
4ac57705-24ce-44b5-95d9-972bf58e4cd1Published · Updated Action summary
Affected: <2.8.2Update to 2.8.2 or newer
All remediation steps- Severity
- Medium6.4
- CVSS
- 6.4CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:CScope- Changed
C:LConfidentiality- Low
I:LIntegrity- Low
A:NAvailability- None
- Weakness
- CWE-79 Cross-Site Scripting
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Page Builder: KingComposer – Free Drag and Drop page builder by King-Theme kingcomposer
- Affected< 2.8.2
- Patched in2.8.2
Update to 2.8.2 or newer.
You are affected if you run < 2.8.2. Version 2.8.2 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Page Builder: KingComposer – Free Drag and Drop page builder by King-Theme.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 2.8.2, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Page Builder: KingComposer – Free Drag and Drop page builder by King-Theme to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Luigi Gubello.
The Page Builder: KingComposer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via an unknown parameter in versions up to, and including, 2.8.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers able to access the post editor to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
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 Page Builder: KingComposer – Free Drag and Drop page builder by King-Theme
All 8| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High8.5 | Authenticated Arbitrary Profile Creation and Stored Cross-Site Scripting ≤2.9.6No patch available | CVE-2021-25048 | |
| High8.8 | Open Redirect ≤2.9.6No patch available | CVE-2022-0165 | |
| Medium5.5 | Stored Cross-Site Scripting <2.9.4Update to 2.9.4 | CVE-2020-36709 | |
| Medium6.1 | Reflected Cross-Site Scripting ≤2.9.4Update to 2.9.5 | CVE-2020-15299 | |
| High8.8 | Authorization Bypass due to Improper Access Control ≤2.9.3Update to 2.9.4 | CVE-2020-36700 |
- High8.5Authenticated Arbitrary Profile Creation and Stored Cross-Site Scripting
≤2.9.6No patch available
- High8.8Open Redirect
≤2.9.6No patch available
- Medium5.5Stored Cross-Site Scripting
<2.9.4Update to 2.9.4
- Medium6.1Reflected Cross-Site Scripting
≤2.9.4Update to 2.9.5
- High8.8Authorization Bypass due to Improper Access Control
≤2.9.3Update to 2.9.4
Same weakness (Cross-Site Scripting)
All Cross-Site Scripting| 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 medium, CVSS 6.4
Record last updated
Sources & licenses
- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- 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.