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TI-2025-12329 Aliases CVE-2025-13486GHSA-8q8p-fv92-864w

Advanced Custom Fields: Extended 0.9.0.5 - 0.9.1.1 - Unauthenticated Remote Code Execution in prepare_form

Priority CRITICAL 86CWE-94Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-94.

Summary

The Advanced Custom Fields: Extended plugin for WordPress is vulnerable to Remote Code Execution in versions 0.9.0.5 through 0.9.1.1 via the prepare_form() function. This is due to the function accepting user input and then passing that through call_user_func_array(). This makes it possible for unauthenticated attackers to execute arbitrary code on the server, which can be leveraged to inject backdoors or create new administrative user accounts.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.68598 99th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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
hwk-frAdvanced Custom Fields: Extended0.9.0.5 – 0.9.1.1—No fix listedCNA
  • Advanced Custom Fields: Extended Vendorhwk-fr Affected 0.9.0.5 – 0.9.1.1 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-13486
  2. 2026-10-03 Alias added: GHSA-8q8p-fv92-864w

References

Other 2

  • TI-2025-13276 Advanced Custom Fields: Extended <= 0.9.2.1 - Unauthenticated Privilege Escalation via Insert User Form Action CVSS 3.1CRITICAL 9.8
  • TI-2026-07743 Improper privilege management in hwk-fr Advanced Custom Fields: Extended CVSS 3.1CRITICAL 9.8
  • TI-2026-83241 Advanced Custom Fields: Extended exposes user password hashes CVSS 3.1HIGH 7.5
  • TI-2025-14104 Advanced Custom Fields: Extended <= 0.9.2.3 - Unauthenticated Arbitrary Shortcode Execution CVSS 3.1MEDIUM 6.5
  • TI-2024-21446 WordPress WP 404 Auto Redirect to Similar Post plugin <= 1.0.4 - Reflected Cross Site Scripting (XSS) vulnerability CVSS 3.1HIGH 7.1
  • TI-2026-81718 Missing authorization in Advanced Custom Fields: Extended CVSS 3.1MEDIUM 5.3
See all 8 →

Sources

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