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WP-CRM System EUVDEUVD-2026-84309

| CVE-2026-9004 MEDIUM
Information Exposure (CWE-200)
2026-09-22 Wordfence GHSA-c4f5-f4rw-hrjw
4.3
CVSS 3.1 · Vendor: Wordfence
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Obtain contributor-level account
  2. Exploit
    Request address-book endpoint with contact_id
  3. Execution
    Enumerate contact_id values sequentially
  4. Impact
    Harvest full PII of all CRM contacts

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V14 - Data Protection Data exposure prevention
MITRE ATT&CK

2 techniques across 2 tactics: Collection, Discovery

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Requires an authenticated WordPress account with contributor-level privileges or above on a site running WP-CRM System ≤3.4.6 (PR:L). No user interaction or non-default configuration is needed beyond having the plugin installed and populated with CRM contact records. Exploitation is limited by the authentication requirement - sites that do not permit self-registration or contributor accounts for untrusted users substantially reduce exposure. The attack reads data only (no write/modify), so impact is confined to disclosure of contact PII.

Impact

This is a genuine but low-severity information-disclosure issue, not a top-tier priority. The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N, base 4.3) is internally consistent with the description: network-reachable, low complexity, but requiring low-privilege authentication (contributor-level) and yielding only confidentiality impact rated Low. There is no EPSS score, no CISA KEV listing, and no public exploit code referenced in the input - exploitation status is therefore 'no public exploit identified at time of analysis'. No SSVC decision data was provided. The C:L rating is defensible because although the exposed data is real PII (names, emails, phone/mobile/fax numbers, physical addresses of CRM contacts), it is limited to one plugin's contact records rather than system-wide credentials or secrets. The one caveat worth flagging: the CWE is labeled CWE-200 (generic info exposure), but the underlying mechanism - enumerating a numeric 'contact_id' to read arbitrary records - is functionally an IDOR/broken-object-level-authorization flaw (closer to CWE-639); this does not change the risk but is worth noting for classification accuracy. Overall: low real-world priority given the authentication requirement, niche plugin footprint, and absence of exploitation signals, though data-privacy/GDPR exposure of harvested PII is the main concrete harm.

Exploit ScenarioDerived

An attacker who has obtained (or registered for) a contributor-level or higher account on a WordPress site running WP-CRM System issues requests that iterate the 'contact_id' parameter against the address-book endpoint, harvesting full names, emails, phone/mobile/fax numbers, and physical addresses for every CRM contact. No public proof-of-concept is referenced, but the attack is trivial to automate given low complexity (AC:L) and requires only a low-privilege authenticated session.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 22, 2026

Authenticated users with contributor-level access or higher on WordPress sites running the WP-CRM System plugin (all versions up to and including 3.4.6) can enumerate the contact_id parameter to read PII belonging to arbitrary CRM contact records, including full names, email addresses, phone, mobile and fax numbers, and physical addresses. The flaw is a CWE-200 sensitive information exposure reachable over the network with low privileges (CVSS 4.3, AV:N/AC:L/PR:L/UI:N) and requires only a valid contributor account plus a populated CRM address book; no user interaction or special configuration is needed beyond the plugin being installed. No public exploit code has been identified at time of analysis and the issue is not confirmed actively exploited (no KEV listing), so the practical risk is a low-severity, read-only privacy disclosure whose real-world exposure scales with how freely contributor accounts are granted on the site.

RemediationAI

Patch status for this issue is not confirmed from the available data - the supplied references point to the source of the vulnerable 3.4.6 tag rather than to a fixed release, so no exact fix version can be cited; administrators should check the plugin's WordPress.org page and the Wordfence advisory (https://www.wordfence.com/threat-intel/vulnerabilities/id/f506a9bd-2501-4437-938d-2833fc8545a9?source=cve) for a corrected build and upgrade as soon as one is published. Until then, the most effective control is to shrink the attack surface: audit and downgrade or remove contributor-and-above accounts that do not genuinely need them, and disable open WordPress user registration or any workflow that grants contributor roles to untrusted parties, since exploitation is impossible without such an account (trade-off: this may block legitimate contributors, who will need an alternative content-submission route). Sites that do not depend on the CRM address book can deactivate the WP-CRM System plugin entirely until a fixed version exists, which removes the exposure at the cost of losing all CRM functionality. Restricting access to wp-admin with IP allowlisting, HTTP authentication, or a security plugin that limits dashboard access to trusted networks further reduces reachability of the vulnerable address-book view, though it is a perimeter measure that does not fix the missing per-record authorization check. Finally, because contact IDs are sequential, monitoring for rapid or sequential requests to the dashboard address-book endpoint is a practical detection signal, and any site that has already granted contributor access to unverified users should treat the stored CRM contact PII (names, emails, phone/fax numbers, physical addresses) as potentially disclosed and consider notification obligations.

Affected VersionsENISA

WP-CRM System – Manage Clients and Projects 0 ≤3.4.6

Affected Packages

euvd wp_crm_system_manage_clients_and_projects no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The affected component is the WordPress plugin WP-CRM System - Manage Clients and Projects (CPE cpe:2.3:a:nofearinc:wp-crm_system_-_manage_clients_and_projects), a customer-relationship-management extension that stores client contacts as WordPress custom post types and exposes an 'address book' dashboard view. The vulnerable logic lives in includes/wcs-dashboard-address-book.php, where the contact lookup driven by the 'contact_id' parameter (referenced at lines 12, 33 and 75 of the 3.4.6 tag) is performed without an authorization or ownership check binding the requested record to the requesting user. This is a classic CWE-200 Exposure of Sensitive Information to an Unauthorized Actor, specifically an insecure direct object reference against a numeric identifier: because IDs are sequential and predictable, a contributor-level user can iterate contact_id values and harvest every CRM record rather than only those they own or should see. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N reflects that the attack is network-reachable, needs no interaction, is confined to confidentiality impact (rated Low because no credentials or administrative data are exposed) and causes no integrity or availability loss.

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Severity by source

Vendor (Wordfence) PRIMARY 4.3 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
vuln.today AI 4.3 MEDIUM

Network-reachable endpoint (AV:N/AC:L), requires low-privilege contributor auth (PR:L), read-only PII disclosure limited to one plugin's records so C:L, no integrity/availability impact.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (Wordfence).

CVSS VectorVendor: Wordfence

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

DescriptionCVE.org

The WP-CRM System - Manage Clients and Projects plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 3.4.6 via the 'contact_id' parameter. This makes it possible for authenticated attackers, with contributor-level access and above, to extract full names, email addresses, phone numbers, mobile numbers, fax numbers, and physical address information of arbitrary CRM contact records by enumerating the contact_id parameter.

Threat Intelligence Overview

EPSS Score
0.2%
Top 88% exploitable
Prevalence
Low
niche WordPress CRM plugin, modest install base, not core infrastructure
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

22
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +22
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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