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CVE Record

CVE-2024-13740: ProfileGrid – User Profiles, Groups and Communities <= 5.9.4.2 - Insecure Direct Object Reference to Authenticated (Subscriber+) Private Messages Disclosure

The ProfileGrid – User Profiles, Groups and Communities plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 5.9.4.2 via the pm_messenger_show_messages function due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Subscriber-level access and above, to read private conversations of other users.

MediumCVSS 4.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

A logged-in WordPress user with Subscriber access could read private conversations belonging to other ProfileGrid users. The issue affects ProfileGrid - User Profiles, Groups and Communities versions up to and including 5.9.4.2. Business impact is privacy exposure, not system takeover, based on the provided CVSS and references.

Executive priority

Treat this as a privacy and trust issue for community or membership sites. Prioritize remediation where private messages may contain customer, employee, or regulated information.

Technical view

The flaw is an IDOR in pm_messenger_show_messages, where a user-controlled key lacks proper validation. CVSS 3.1 is 4.3 with network access, low complexity, low privileges, no user interaction, and limited confidentiality impact only. The cited CWE is CWE-639.

Likely exposure

Exposure is limited to WordPress sites running the ProfileGrid plugin at version 5.9.4.2 or earlier, where untrusted or broadly assigned Subscriber-level accounts exist.

Exploitation context

The source bundle does not show CISA KEV listing or other evidence of active exploitation. The vulnerability is still practical because it requires only authenticated Subscriber-level access.

Researcher notes

Analysis is limited to the provided bundle. The cited code location and Wordfence entry identify the vulnerable function and cause, but the bundle does not name a fixed version or provide exploit-in-the-wild evidence.

Mitigation direction

  • Identify all WordPress sites using the ProfileGrid plugin.
  • Check vendor or Wordfence guidance for the fixed version before upgrading.
  • Upgrade affected installations when a vendor-confirmed fixed release is available.
  • Restrict Subscriber account creation and access until remediation is complete.
  • Disable the plugin where private messaging is not business-critical.

Validation and detection

  • Inventory ProfileGrid versions across WordPress environments.
  • Flag any installation running version 5.9.4.2 or earlier.
  • Review whether public registration grants Subscriber-level accounts.
  • Confirm private messaging is not exposed to untrusted users.
  • Monitor for unusual authenticated access to messaging functionality.
Prepared
Confidence
high
Sources
4

Public sources used

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 · low confidence lookup

CWE-639: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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.

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cve · low confidence lookup

CVE-2024-13740 mapping review

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

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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:L/I:N/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
3Source 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:L/I:N/A:N2.81.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

4.3Medium
CVSS 3.1 vector shape for CVE-2024-13740Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
metagaussProfileGrid – User Profiles, Groups and Communities0unaffected
Weakness

CWE details

CWE-639

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

CWE-639 · source CWE mapping

Authorization Bypass Through User-Controlled Key

Authorization Bypass Through User-Controlled Key represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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