Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessRegister free subscriber account
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DeliveryAuthenticate to WordPress site
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ExploitIdentify restricted membership content URL
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ExecutionSend authenticated HTTP request to protected endpoint
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PersistBypass WishList Member authorization check
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ImpactRead premium or restricted content
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization checks on every request
MITRE ATT&CK
1 technique across 1 tactic: Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | Exploitation requires a valid WordPress subscriber account on the target site - the lowest authenticated WordPress role, freely obtainable on any site with open user registration enabled. The WishList Member X plugin must be installed and active (version ≤ 3.29.0). Sites that have disabled subscriber self-registration or require manual account approval are not remotely exploitable by anonymous attackers. The CVSS AC:L metric confirms no additional configuration state, race condition, or complex setup is needed beyond holding the subscriber credential. Exploitation is bounded to confidentiality (C:L) - specifically, unauthorized viewing of membership-protected content - with no modification or disruption of site data (I:N, A:N). |
| Impact | The NVD CVSS score of 4.3 (Medium) accurately reflects the constrained blast radius: confidentiality impact is Low (restricted content exposure only), with no integrity or availability impact. The PR:L metric is the key limiting signal - a valid subscriber account is a prerequisite, restricting exploitation to registered users. The attack complexity is Low (AC:L), meaning no race conditions or special configurations beyond the plugin being active are required. EPSS data was not provided in the available intelligence, so exploitation probability cannot be quantified beyond CVSS. The vulnerability is not listed in the CISA KEV catalog, and no POC has been identified, indicating no confirmed active or opportunistic exploitation. The 'Authentication Bypass' tag in the source data overstates the issue - this is an authorization bypass within an authenticated session, not a bypass of the authentication mechanism itself. Real-world business risk is highest for sites offering free subscriber sign-ups alongside paid membership tiers, as any freely-registered user could access premium content, undermining the site's revenue model. |
| Exploit ScenarioDerived | An attacker registers a free subscriber account on a WordPress site running WishList Member X ≤ 3.29.0 with open registration enabled. Authenticated as a subscriber, they send direct HTTP requests to URLs or endpoints serving membership-gated content, which the plugin serves without validating the user's membership tier. The low attack complexity (AC:L) suggests exploitation requires only knowledge of the restricted content URL, with no further tooling or chaining required. |
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Alert meAnalysisAIv1 – Jun 17, 2026
Broken access control in WishList Member X WordPress plugin (versions ≤ 3.29.0) permits authenticated subscriber-level users to access membership-restricted content without holding the required membership tier. Rooted in CWE-862 (Missing Authorization), the plugin fails to enforce authorization checks on protected content access paths, exposing paid or restricted resources to the lowest WordPress authenticated role. No public exploit has been identified at time of analysis, and this vulnerability has not been added to the CISA KEV catalog.
RemediationAI
Patch available per vendor advisory - update WishList Member X to a version above 3.29.0; however, the exact fixed version number was not independently confirmed from the available data and should be verified against the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/wishlist-member-x/vulnerability/wordpress-wishlist-member-x-plugin-3-29-0-broken-access-control-vulnerability before deploying. As an immediate compensating control, site administrators should disable open subscriber registration (Dashboard → Settings → General → uncheck 'Anyone can register') to prevent untrusted users from obtaining the subscriber accounts required for exploitation; the trade-off is that no new users can self-register until the patch is applied. Alternatively, restricting the WishList Member plugin's protected content to only explicitly vetted subscriber accounts reduces the exposure surface while leaving registration open. Neither workaround eliminates the underlying missing authorization flaw.
Affected VersionsENISA
Affected Packages
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
WishList Member X is a WordPress membership management plugin that gates content based on user-assigned membership levels. CWE-862 (Missing Authorization) indicates the plugin omits a server-side authorization check before fulfilling a subscriber's request to access protected resources - the code authenticates the user (confirms they are logged in) but does not verify the user's membership tier against the content's access policy. The affected product is precisely scoped by CPE cpe:2.3:a:wishlist_member:wishlist_member_x:*:*:*:*:*:*:*:*, covering all releases through 3.29.0. The CVSS vector AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N is consistent with a network-accessible WordPress endpoint reachable by any subscriber without additional complexity or interaction.
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Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Subscriber account (PR:L) required over network (AV:N); confidentiality capped at Low (protected content read-only); no integrity or availability impact applies.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
DescriptionCVE.org
Subscriber Broken Access Control in WishList Member X <= 3.29.0 versions.
Threat Intelligence Overview
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.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
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EUVD-2026-37663
NVD
CVE.org
EPSS
Vulnrichment
GitHub PoC
Exploit-DB