CVE-2022-2594Public exploitNetwork attack vector

Unauthenticated file upload via frontend form

Published Aug 22, 2022 · Updated Aug 3, 2024

Unrestricted file upload in Advanced Custom Fields and Advanced Custom Fields PRO before 5.12.3 allows remote attackers to upload permitted files through a frontend form. The form handler accepts attacker-supplied file content without requiring authorization, while default WordPress rules block PHP uploads. Exploitation requires a publicly reachable ACF frontend form; uploaded non-PHP files can support phishing or chaining with another flaw, but direct code execution is not established.

CVSS severity8.8
High
EPSS probability1.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in Advanced Custom Fields and Advanced Custom Fields PRO before 5.12.3 allows remote attackers to upload permitted files through a frontend form. The form handler accepts attacker-supplied file content without requiring authorization, while default WordPress rules block PHP uploads. Exploitation requires a publicly reachable ACF frontend form; uploaded non-PHP files can support phishing or chaining with another flaw, but direct code execution is not established.

The record

CVE
CVE-2022-2594
Published
Aug 22, 2022
Updated
Aug 3, 2024
Vendor
Delicious Brains
Product
Advanced Custom Fields
Classifications
CWE-434, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 22, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=5.0 <5.0*
  2. Affected versionversion=5.12.3 <5.12.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Delicious Brains · Advanced Custom Fieldsversion=5.0 <5.0*; version=5.12.3 <5.12.3
Delicious Brains · Advanced Custom Fields PROversion=5.0 <5.0*; version=5.12.3 <5.12.3

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

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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