Advanced Custom Fields PRO 6.1 — 6.1.7 - Authenticated (Administrator+) Stored Cross-Site Scripting
77876d74-5825-4bd8-812e-87061d0470e6Published · Updated Action summary
Affected: 6.1 – 6.1.7Update to 6.1.8 or newer
All remediation steps- Severity
- Medium4.4
- CVSS
- 4.4CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:HAttack complexity- High
PR:HPrivileges required- High
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?
Advanced Custom Fields Pro advanced-custom-fields-pro
- Affected6.1 – 6.1.7
- Patched in6.1.8
Update to 6.1.8 or newer.
You are affected if you run 6.1 – 6.1.7. Version 6.1.8 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Advanced Custom Fields Pro.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 6.1.8, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Advanced Custom Fields Pro to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Satoo Nakano, Ryotaro Imamura.
The Advanced Custom Fields PRO plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in versions 6.1 through 6.1.7 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
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 Advanced Custom Fields Pro
All 18| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium4.4 | Authenticated (Admin+) Stored Cross-Site Scripting ≤6.3.6.2Update to 6.3.6.3 | CVE-2024-49593 | |
| Medium5.1 | Authenticated (Admin+) Limited Arbitrary Function Call ≤6.3.6.2Update to 6.3.6.3 | CVE-2024-9529 | |
| Medium5.5 | Authenticated Stored Cross-Site Scripting ≤6.3.5Update to 6.3.6 | CVE-2024-45429 | |
| Medium5.4 | Missing Authorization ≤6.3.1Update to 6.3.2 | CVE-2024-37250 | |
| Medium4.3 | Cross-Site Request Forgery ≤6.3.1Update to 6.3.2 | CVE-2024-37251 |
- Medium4.4Authenticated (Admin+) Stored Cross-Site Scripting
≤6.3.6.2Update to 6.3.6.3
- Medium5.1Authenticated (Admin+) Limited Arbitrary Function Call
≤6.3.6.2Update to 6.3.6.3
- Medium5.5Authenticated Stored Cross-Site Scripting
≤6.3.5Update to 6.3.6
- Medium5.4Missing Authorization
≤6.3.1Update to 6.3.2
- Medium4.3Cross-Site Request Forgery
≤6.3.1Update to 6.3.2
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 4.4
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.