CVE-2023-51671Network attack vector

Subscriber-level settings changes via missing capability check

Published Jun 12, 2024 · Updated Apr 28, 2026

Missing authorization in FunnelKit Checkout 3.10.3 and earlier allows remote authenticated users to change plugin settings over the network. An undisclosed settings-update function accepts the request without performing the WordPress capability check needed to restrict administrative changes. Subscriber-level access is sufficient; published sources do not identify the affected settings or any further consequence.

CVSS severity5.4
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in FunnelKit Checkout 3.10.3 and earlier allows remote authenticated users to change plugin settings over the network. An undisclosed settings-update function accepts the request without performing the WordPress capability check needed to restrict administrative changes. Subscriber-level access is sufficient; published sources do not identify the affected settings or any further consequence.

The record

CVE
CVE-2023-51671
Published
Jun 12, 2024
Updated
Apr 28, 2026
Vendor
FunnelKit
Product
FunnelKit Checkout
Classifications
CWE-862
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 12, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 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=n/a <=3.10.3 changes=[{"at":"3.11.0","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

FunnelKit · FunnelKit Checkoutversion=n/a <=3.10.3 changes=[{"at":"3.11.0","status":"unaffected"}]

Published CVSS scores

5.4PatchstackCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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.

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

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-862Missing Authorization

Public exploit references

No public exploit references are available in this record.

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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