KB Support <= 1.5.88 — Missing Authorization to Authenticated (Subscriber+) User Data Retrieval
55bb3620-c182-46c4-bc22-8526cf410cdbPublished · Updated Action summary
Affected: <1.5.89Update to 1.5.89 or newer
All remediation steps- Severity
- Medium4.3
- CVSS
- 4.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:UScope- Unchanged
C:LConfidentiality- Low
I:NIntegrity- None
A:NAvailability- None
- Weakness
- CWE-862 Missing Authorization
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
KB Support – Customer Support Ticket & Helpdesk Plugin, Knowledge Base Plugin kb-support
- Affected< 1.5.89
- Patched in1.5.89
Update to 1.5.89 or newer.
You are affected if you run < 1.5.89. Version 1.5.89 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under KB Support – Customer Support Ticket & Helpdesk Plugin, Knowledge Base Plugin.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 1.5.89, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch KB Support – Customer Support Ticket & Helpdesk Plugin, Knowledge Base Plugin to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence.
The KB Support plugin for WordPress is vulnerable to user data retrieval in versions up to, and including, 1.5.88. This is due to to a missing capability check on the kbs_ajax_get_customer_data() function. This makes it possible for authenticated attackers with minimal permissions, such as a subscriber, to execute the function and retrieve limited user data like email, name, phone, and url.
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 KB Support – Customer Support Ticket & Helpdesk Plugin, Knowledge Base Plugin
All 9| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.5 | Unauthenticated Sensitive Information Exposure Through Unprotected Directory ≤1.7.4No patch available | CVE-2024-13604 | |
| Medium6.1 | Unauthenticated Open Redirect ≤1.6.7Update to 1.6.8 | CVE-2025-24741 | |
| High8.1 | Missing Authorization to Authenticated (Subscriber+) Multiple Administrator Actions ≤1.6.6Update to 1.6.7 | CVE-2024-8548 | |
| Medium6.5 | Missing Authorization to Unauthenticated Ticket Reply Exposure ≤1.6.6Update to 1.6.7 | CVE-2024-8632 | |
| Medium4.3 | Missing Authorization ≤1.6.0Update to 1.6.1 | CVE-2024-33589 |
- High7.5Unauthenticated Sensitive Information Exposure Through Unprotected Directory
≤1.7.4No patch available
- Medium6.1Unauthenticated Open Redirect
≤1.6.7Update to 1.6.8
- High8.1Missing Authorization to Authenticated (Subscriber+) Multiple Administrator Actions
≤1.6.6Update to 1.6.7
- Medium6.5Missing Authorization to Unauthenticated Ticket Reply Exposure
≤1.6.6Update to 1.6.7
- Medium4.3Missing Authorization
≤1.6.0Update to 1.6.1
Same weakness (Missing Authorization)
All Missing Authorization| 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 4.3
Record last updated
Sources & licenses
- Vulnerability data
- Wordfence Intelligence. [object Object] 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.