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TI-2023-01131 Aliases CVE-2023-1196GHSA-mqwh-49j7-27h8

Advanced Custom Fields - Contributor+ PHP Object Injection

Priority HIGH 73CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-502.

Summary

The Advanced Custom Fields (ACF) Free and Pro WordPress plugins 6.x before 6.1.0 and 5.x before 5.12.5 unserialize user controllable data, which could allow users with a role of Contributor and above to perform PHP Object Injection when a suitable gadget is present.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01089 65th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by the CNA and NVD
Fix Fixed Advanced Custom Fields (ACF) (Unknown): 5.12.5, 6.1.0Advanced Custom Fields (ACF) Pro (Unknown): 5.12.5, 6.1.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownAdvanced Custom Fields (ACF)5.0.0 to before 5.12.5; 6.0.0 to before 6.1.05.12.5, 6.1.0Patch availableCNA
UnknownAdvanced Custom Fields (ACF) Pro5.0.0 to before 5.12.5; 6.0.0 to before 6.1.05.12.5, 6.1.0Patch availableCNA
  • Advanced Custom Fields (ACF) VendorUnknown Affected 5.0.0 to before 5.12.5; 6.0.0 to before 6.1.0 Fixed in 5.12.5, 6.1.0 Patch available CNA
  • Advanced Custom Fields (ACF) Pro VendorUnknown Affected 5.0.0 to before 5.12.5; 6.0.0 to before 6.1.0 Fixed in 5.12.5, 6.1.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:advancedcustomfields:advanced_custom_fields:*:*:*:*:*:wordpress:*:*5.0.0 to before 5.12.5; 6.0.0 to before 6.1.0VulnerableAdvanced Custom Fields
  • cpe:2.3:a:advancedcustomfields:advanced_custom_fields:*:*:*:*:*:wordpress:*:* Versions 5.0.0 to before 5.12.5; 6.0.0 to before 6.1.0 Vulnerable ·Advanced Custom Fields

Remediation

  • Fix · CNA Advanced Custom Fields (ACF) (Unknown) Fixed in 5.12.5, 6.1.0
  • Fix · CNA Advanced Custom Fields (ACF) Pro (Unknown) Fixed in 5.12.5, 6.1.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-1196
  2. 2026-10-03 Alias added: GHSA-mqwh-49j7-27h8

References

Exploit 2

  • TI-2024-04251 Advanced Custom Fields < 6.3 - Contributor+ Custom Field Access CVSS 3.1HIGH 7.5
  • TI-2024-08839 Secure Custom Fields < 6.3.6.3 - Admin+ Remote Code Execution CVSS 3.1MEDIUM 6.6
  • TI-2023-14589 WordPress Advanced Custom Fields / Advanced Custom Fields PRO plugins <= 6.1.5 vulnerable to Cross Site Scripting (XSS) CVSS 3.1HIGH 7.1
  • TI-2022-02396 Advanced Custom Fields 5.0-5.12.2 - Unauthenticated File Upload CVSS 3.1HIGH 8.8
  • TI-2022-19331 WordPress Advanced Custom Fields Plugin 3.1.1-6.0.2 is vulnerable to Sensitive Data Exposure CVSS 3.1HIGH 7.5
  • TI-2021-04079 Missing authorization in Delicious Brains Advanced Custom Fields and Advanced Custom… CVSS 3.1HIGH 7.5
See all 14 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences