JCH Optimize <= 4.0.0 — Missing Authorization to Authenticated (Subscriber+) Settings Modification
2077bd81-52bd-4aa7-85f6-9abb02aec65bPublished · Updated Action summary
Affected: <4.0.1Update to 4.0.1 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:N/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:UScope- Unchanged
C:NConfidentiality- None
I:LIntegrity- Low
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?
JCH Optimize jch-optimize
- Affected< 4.0.1
- Patched in4.0.1
Update to 4.0.1 or newer.
You are affected if you run < 4.0.1. Version 4.0.1 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under JCH Optimize.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 4.0.1, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch JCH Optimize to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence.
The JCH Optimize plugin for WordPress is vulnerable to unauthorized modification of data due to missing capability checks on the doAjaxConfigureSettings(), doAjaxOptimizeImages(), doAjaxOnClickIcon(), and doAjaxSmartCombine() functions in versions up to, and including, 4.0.0. This makes it possible for authenticated attackers, with minimal permissions such as a subscriber, to modify and control plugin settings. CVE-2024-30481 is likely a duplicate of this issue.
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 JCH Optimize
All 6| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium6.4 | Authenticated (Subscriber+) Stored Cross-Site Scripting <6.0.1Update to 6.0.1 | CVE-2026-84934 | |
| Medium4.9 | 5.0.0 - Authenticated (Administrator+) Path Traversal 4.2.1 – 5.0.0Update to 5.0.1 | CVE-2025-15693 | |
| Medium4.3 | Authenticated (Subscriber+) Directory Traversal ≤4.2.0Update to 4.2.1 | CVE-2024-34808 | |
| Medium4.3 | Missing Authorization ≤4.0.0Update to 4.0.1 | CVE-2024-30481 | |
| Medium4.4 | Authenticated (Administrator+) Stored Cross-Site Scripting via admin settings ≤3.2.2Update to 3.2.3 | CVE-2023-25491 |
- Medium6.4Authenticated (Subscriber+) Stored Cross-Site Scripting
<6.0.1Update to 6.0.1
- Medium4.95.0.0 - Authenticated (Administrator+) Path Traversal
4.2.1 – 5.0.0Update to 5.0.1
- Medium4.3Authenticated (Subscriber+) Directory Traversal
≤4.2.0Update to 4.2.1
- Medium4.3Missing Authorization
≤4.0.0Update to 4.0.1
- Medium4.4Authenticated (Administrator+) Stored Cross-Site Scripting via admin settings
≤3.2.2Update to 3.2.3
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.