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CVE Record

CVE-2023-51670: WordPress FunnelKit Checkout plugin <= 3.10.3 - Authenticated Arbitrary Plugin Activation vulnerability

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

MediumCVSS 4.3Not KEV-listedUpdated
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2023-51670 affects the WordPress FunnelKit Checkout plugin through version 3.10.3. An authenticated user may be able to activate plugins without proper authorization. This is mainly an integrity risk: it could change site behavior, but the cited CVSS data does not indicate direct data theft or service outage.

Executive priority

Treat as a medium-priority WordPress exposure. Prioritize e-commerce or lead-generation sites and any site with many user accounts, because unauthorized plugin activation can alter business-critical site behavior.

Technical view

The issue is a missing authorization vulnerability, classified as CWE-862. CVSS 3.1 scores it 4.3 with network access, low complexity, low privileges required, no user interaction, unchanged scope, and low integrity impact only.

Likely exposure

Exposure is limited to WordPress sites running FunnelKit Checkout through 3.10.3, especially where non-administrative users can authenticate. Risk depends on installed plugin inventory and account controls.

Exploitation context

The source bundle does not show CISA KEV listing or active exploitation evidence. Exploitation requires an authenticated account, so public self-registration or compromised user accounts would increase practical risk.

Researcher notes

Focus review on authorization checks around plugin activation-related code paths. The provided evidence identifies missing authorization but does not include exploit details, fixed-version specifics, or proof of active exploitation.

Mitigation direction

  • Identify WordPress sites using FunnelKit Checkout through version 3.10.3.
  • Check FunnelKit or Patchstack guidance for the corrected version or vendor-recommended mitigation.
  • Update the plugin when a vendor-supported fixed release is available.
  • Restrict unnecessary user accounts and disable public registration where not needed.
  • Review installed inactive plugins and remove unused components.

Validation and detection

  • Inventory FunnelKit Checkout versions across WordPress sites.
  • Confirm whether affected sites allow low-privileged authenticated users.
  • Review WordPress audit logs for unexpected plugin activation events.
  • Verify plugin activation remains limited to authorized administrator capabilities.
  • Document remediation status and any compensating access controls.
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-2023-51670 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
4.3 (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:N

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
4.3CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N2.81.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

4.3Medium
CVSS 3.1 vector shape for CVE-2023-51670Attack 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:N

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.