CVE-2024-9529Public exploitNetwork attack vector

Administrator code execution via imported metabox callback

Published Nov 15, 2024 · Updated Nov 15, 2024

Code injection in Secure Custom Fields and Advanced Custom Fields PRO allows administrators to execute arbitrary PHP functions through settings imports. A crafted custom-post-type JSON import assigns an arbitrary function name to register_meta_box_cb, which WordPress invokes when the post editor loads. An administrator-level account and a subsequent visit to the crafted post type are required; the selected callback runs with the WordPress process's privileges.

CVSS severity6.6
Medium
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Secure Custom Fields and Advanced Custom Fields PRO allows administrators to execute arbitrary PHP functions through settings imports. A crafted custom-post-type JSON import assigns an arbitrary function name to register_meta_box_cb, which WordPress invokes when the post editor loads. An administrator-level account and a subsequent visit to the crafted post type are required; the selected callback runs with the WordPress process's privileges.

The record

CVE
CVE-2024-9529
Published
Nov 15, 2024
Updated
Nov 15, 2024
Vendor
WordPress.org
Product
Secure Custom Fields
Classifications
CWE-94, T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Nov 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 15, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <6.3.6.3
  2. Affected versionversion=6.3.7 <6.3.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

WordPress.org · Secure Custom Fieldsversion=0 <6.3.6.3; version=6.3.7 <6.3.9
WP Engine · Advanced Custom Fieldsversion=0 <6.3.6.3; version=6.3.7 <6.3.9
WP Engine · Advanced Custom Fields PROversion=0 <6.3.9

Published CVSS scores

6.6CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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