WordPress Advanced Custom Fields / Advanced Custom Fields PRO plugins <= 6.1.5 vulnerable to Cross Site Scripting (XSS)
Priority MEDIUM 58CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in WP Engine Advanced Custom Fields Pro, WP Engine Advanced Custom Fields plugins <= 6.1.5 versions.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.39003 98th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| wpengine | Advanced Custom Fields Pro | up to 6.1.5 | — | No fix listed | CNA |
| wpengine | Advanced Custom Fields | up to 6.1.5 | — | No fix listed | CNA |
- Advanced Custom Fields Pro Vendorwpengine Affected up to 6.1.5 Fixed in — No fix listed CNA
- Advanced Custom Fields Vendorwpengine Affected up to 6.1.5 Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:advancedcustomfields:advanced_custom_fields:*:*:*:*:-:wordpress:*:* | before 6.1.6 | Vulnerable | Advanced Custom Fields |
| cpe:2.3:a:advancedcustomfields:advanced_custom_fields:*:*:*:*:pro:wordpress:*:* | before 6.1.6 | Vulnerable | Advanced Custom Fields |
- cpe:2.3:a:advancedcustomfields:advanced_custom_fields:*:*:*:*:-:wordpress:*:* Versions before 6.1.6 Vulnerable ·Advanced Custom Fields
- cpe:2.3:a:advancedcustomfields:advanced_custom_fields:*:*:*:*:pro:wordpress:*:* Versions before 6.1.6 Vulnerable ·Advanced Custom Fields
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-30777
- 2026-10-03 Alias added: GHSA-c463-967w-9f3r
References
Advisory 2
- https://patchstack.com/database/vulnerability/advanced-custom-fields-pro/wordpress-advanced-custom-fields-pro-plugin-6-1-5-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve
- https://patchstack.com/database/vulnerability/advanced-custom-fields/wordpress-advanced-custom-fields-plugin-6-1-5-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve
More wpengine vulnerabilities
- TI-2023-06336 Better Search Replace <= 1.4.4 - Unauthenticated PHP Object Injection CVSS 3.1CRITICAL 9.8
- TI-2024-23053 Wordpress Advanced Custom Fields Pro plugin < 6.2.10 - Contributor+ Local File Inclusion vulnerability CVSS 3.1CRITICAL 9.9
- TI-2019-07258 The WPGraphQL 0.2.3 plugin for WordPress allows remote attackers to register a new user… CVSS 3.0CRITICAL 9.8
- TI-2019-07259 An issue was discovered in the WPGraphQL 0.2.3 plugin for WordPress. CVSS 3.0CRITICAL 9.1
- TI-2024-03640 Genesis Blocks <= 3.1.3 - Contributor+ Stored XSS CVSS 3.1MEDIUM 6.8
- TI-2022-01434 WPGraphQL WooCommerce <= 0.11.0 - Unauthenticated Coupon Codes Disclosure CVSS 3.1MEDIUM 5.3
Sources
- CVE-2023-30777 · CVE Program
- CVE-2023-30777 · NVD
- FIRST EPSS
- GHSA-c463-967w-9f3r · GitHub Advisory Database · CC BY 4.0
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