CVE-2023-3957Network attack vector

Subscriber-level user metadata modification via unrestricted apg_profile_update

Published Jul 27, 2023 · Updated Apr 8, 2026

Improper authorization in ACF Photo Gallery Field 1.9 and earlier allows remote authenticated users to modify arbitrary user metadata. The apg_profile_update function accepts attacker-chosen metadata keys and string values without adequately restricting which keys a subscriber can update. Subscriber-level access is sufficient, and the resulting write is limited to string-valued user metadata rather than arbitrary database records.

CVSS severity4.3
Medium
EPSS probability0.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in ACF Photo Gallery Field 1.9 and earlier allows remote authenticated users to modify arbitrary user metadata. The apg_profile_update function accepts attacker-chosen metadata keys and string values without adequately restricting which keys a subscriber can update. Subscriber-level access is sufficient, and the resulting write is limited to string-valued user metadata rather than arbitrary database records.

The record

CVE
CVE-2023-3957
Published
Jul 27, 2023
Updated
Apr 8, 2026
Vendor
Navneil Naicker
Product
ACF Photo Gallery Field
Classifications
CWE-863, CWE-285, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2026Record 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 <=1.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Navneil Naicker · ACF Photo Gallery Fieldversion=0 <=1.9

Published CVSS scores

4.3WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
CWE-285Improper Authorization
T1098Account Manipulation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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