Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Subscriber-level auth required (PR:L); network-accessible plugin endpoint (AV:N); no confidentiality or availability impact, only unauthorized write/modify actions (I:H).
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
Lifecycle Timeline
1DescriptionCVE.org
Subscriber Broken Access Control in Link Whisper Premium <= 2.9.0 versions.
AnalysisAI
Broken access control in Link Whisper Premium WordPress plugin versions 2.9.0 and below allows subscriber-level authenticated users to perform privileged actions that should be restricted to higher-capability roles. The flaw stems from missing authorization checks (CWE-862), enabling low-privilege users to make unauthorized modifications with high integrity impact. No public exploit code or active exploitation (CISA KEV) has been identified at time of analysis, but the low attack complexity and network accessibility make this straightforward to exploit for any user holding even a basic WordPress account on the target site.
Technical ContextAI
Link Whisper Premium is a paid WordPress plugin designed to automate and manage internal linking across posts and pages. The vulnerability is classified under CWE-862 (Missing Authorization), meaning the plugin fails to verify whether the authenticated requester has sufficient privileges before executing sensitive operations - a common weakness in WordPress plugins that rely on nonce checks or capability checks inconsistently. The CPE string cpe:2.3:a:linkwhisper:link_whisper_premium:*:*:*:*:*:*:*:* confirms all versions through 2.9.0 are affected with no version floor. WordPress subscriber roles have minimal capabilities by default (read-only), so any action accessible to subscribers that should require editor, author, or admin access represents a meaningful privilege escalation in the context of site content integrity.
RemediationAI
Update Link Whisper Premium to a version above 2.9.0; the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/link-whisper-premium/vulnerability/wordpress-link-whisper-premium-plugin-2-9-0-broken-access-control-vulnerability?_s_id=cve should be consulted for the exact patched release version, which was not independently confirmed in the available data. As a compensating control prior to patching, site administrators should disable open user registration (Settings > General > uncheck 'Anyone can register') to prevent untrusted parties from obtaining subscriber accounts, noting this will also prevent legitimate new user signups. Additionally, auditing existing subscriber accounts for suspicious activity is advisable, as integrity-impacting actions may have already occurred. No patch version number was independently verifiable from the provided references beyond the existence of a fix per Patchstack.
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Same weakness CWE-862 – Missing Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-41352
GHSA-2565-6q46-9x5v