Missing authorization in Delicious Brains Advanced Custom Fields and Advanced Custom…
Priority LOW 32CWE-862Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-862.
Summary
Advanced Custom Fields versions prior to 5.11 and Advanced Custom Fields Pro versions prior to 5.11 contain a missing authorization vulnerability in obtaining the user list which may allow a user to obtain the unauthorized information via unspecified vectors.
Why it matters now
EPSS 0.01787 78th percentileScored 2026-11-07
Fix Fixed Advanced Custom Fields and Advanced Custom Fields Pro (Delicious Brains): 5.11
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Delicious Brains | Advanced Custom Fields and Advanced Custom Fields Pro | before 5.11 | 5.11 | Patch available | CNA |
- Advanced Custom Fields and Advanced Custom Fields Pro VendorDelicious Brains Affected before 5.11 Fixed in 5.11 Patch available CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:advancedcustomfields:advanced_custom_fields:*:*:*:*:*:wordpress:*:* | before 5.11 | Vulnerable | Advanced Custom Fields |
| cpe:2.3:a:advancedcustomfields:advanced_custom_fields:*:*:*:*:pro:wordpress:*:* | before 5.11 | Vulnerable | Advanced Custom Fields |
- cpe:2.3:a:advancedcustomfields:advanced_custom_fields:*:*:*:*:*:wordpress:*:* Versions before 5.11 Vulnerable ·Advanced Custom Fields
- cpe:2.3:a:advancedcustomfields:advanced_custom_fields:*:*:*:*:pro:wordpress:*:* Versions before 5.11 Vulnerable ·Advanced Custom Fields
Remediation
- Fix · CNA Advanced Custom Fields and Advanced Custom Fields Pro (Delicious Brains) Fixed in 5.11
Timeline
- 2026-10-02 Threatist record created from CVE-2021-20866
- 2026-10-03 Alias added: GHSA-gcpg-c569-xfr4
References
More Delicious Brains vulnerabilities
- TI-2021-04079 Missing authorization in Delicious Brains Advanced Custom Fields and Advanced Custom… CVSS 3.1HIGH 7.5
- TI-2022-02395 Better Search and Replace < 1.4.1 - Admin+ SQLi CVSS 3.1HIGH 7.2
- TI-2022-00190 Database Backup for WordPress < 2.5.1 - Admin+ SQL Injection CVSS 3.1HIGH 7.2
- TI-2022-07336 Missing authorization in Delicious Brains Advanced Custom Fields CVSS 3.1MEDIUM 6.5
- TI-2021-04081 Missing authorization in Delicious Brains Advanced Custom Fields and Advanced Custom… CVSS 3.1MEDIUM 6.5
- TI-2023-06128 Advanced Custom Fields <= 6.2.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via Custom Field CVSS 3.1MEDIUM 6.4
Sources
- CVE-2021-20866 · CVE Program
- CVE-2021-20866 · NVD
- FIRST EPSS
- GHSA-gcpg-c569-xfr4 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences