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CVE Record

CVE-2023-51671: WordPress FunnelKit Checkout plugin <= 3.10.3 - Authenticated Plugin Settings Change vulnerability

Missing Authorization vulnerability in FunnelKit FunnelKit Checkout.This issue affects FunnelKit Checkout: from n/a through 3.10.3.

MediumCVSS 5.4Not KEV-listedUpdated
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

A logged-in user may be able to change FunnelKit Checkout plugin settings without proper permission checks. The expected business impact is limited but real: unauthorized configuration changes could disrupt checkout behavior or weaken intended controls on affected WordPress sites.

Executive priority

Handle in the normal vulnerability remediation queue, faster for revenue-critical checkout sites. The issue is not rated critical, but checkout configuration integrity matters operationally.

Technical view

CVE-2023-51671 is a CWE-862 missing authorization issue in FunnelKit Checkout through version 3.10.3. The CVSS 3.1 score is 5.4, network-reachable, low complexity, low privileges, no user interaction, with low integrity and availability impact and no confidentiality impact.

Likely exposure

Exposure is limited to WordPress sites running FunnelKit Checkout version 3.10.3 or earlier where an attacker has authenticated access. The provided sources do not identify affected roles, endpoints, or a fixed release version.

Exploitation context

The source bundle does not show CISA KEV listing or any cited evidence of active exploitation. Treat this as a plausible authenticated abuse path rather than a confirmed in-the-wild campaign.

Researcher notes

The supplied data is sparse: no endpoint, role threshold, proof-of-concept details, or fixed version are provided. Do not infer unauthenticated exposure or active exploitation from this bundle.

Mitigation direction

  • Inventory WordPress sites for FunnelKit Checkout installations.
  • Prioritize sites running FunnelKit Checkout 3.10.3 or earlier.
  • Check FunnelKit or Patchstack guidance for the fixed version or official mitigation.
  • Restrict WordPress account creation and remove unnecessary low-privilege users.
  • Review plugin settings for unexpected changes after remediation.

Validation and detection

  • Confirm whether FunnelKit Checkout is installed on each WordPress property.
  • Record the installed plugin version and compare it to 3.10.3.
  • Review WordPress users with authenticated access to affected sites.
  • Check administrative audit logs for unexpected FunnelKit Checkout setting changes.
  • Track vendor advisory updates because the bundle does not name a fix version.
Prepared
Confidence
medium
Sources
3

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · medium confidence lookup

CWE-862: Authorization and privilege behavior lookup

Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2023-51671 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.4 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.4CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L2.82.5Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

5.4Medium
CVSS 3.1 vector shape for CVE-2023-51671Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone
Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
FunnelKitFunnelKit Checkoutn/aunaffected
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-862 · source CWE mapping

Missing Authorization

Missing Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.