EUVD-2026-65193
GHSA-64w4-qrww-rxhv
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Network-exploitable with subscriber credentials and no user interaction; only limited integrity impact from unauthorized link creation; the provided vector is independently consistent with the described mechanics.
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
Lifecycle Timeline
2DescriptionCVE.org
The BetterLinks - Link Shortener, Link Cloaking, Redirects, Affiliate Link Manager & MCP plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.1.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to create arbitrary BetterLinks short URLs with attacker-controlled slugs and redirect destinations, enabling phishing and SEO abuse. Exploitation requires the Fluent Boards companion plugin to be installed and active (so that the FLUENT_BOARDS constant is defined), and is further facilitated by the betterlinks_admin_nonce nonce being emitted on every frontend page via wp_localize_script, making it accessible to any authenticated user.
AnalysisAI
Authorization bypass in the BetterLinks WordPress plugin (all versions ≤ 3.1.0) permits any authenticated subscriber-level user to create arbitrary short URLs with attacker-controlled slugs and redirect destinations, enabling phishing campaigns that abuse the victim site's trusted domain and SEO manipulation. Exploitation is conditional on the Fluent Boards companion plugin being simultaneously installed and active, and is facilitated by the plugin leaking the betterlinks_admin_nonce to all authenticated users on every frontend page via wp_localize_script. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Two specific conditions must simultaneously be met: (1) the Fluent Boards companion plugin must be installed and active on the WordPress site, causing the FLUENT_BOARDS constant to be defined - this is the primary gate that opens the vulnerable AJAX code path; and (2) the attacker must hold at minimum a subscriber-level WordPress account on the target site. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The NVD CVSS 4.3 (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N) accurately reflects the constrained scope: only integrity is impacted, and exploitation is gated behind authenticated access. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | An upstream fix has been committed to the BetterLinks plugin repository as documented in the WordPress trac changeset at https://plugins.trac.wordpress.org/changeset?reponame=&old=3658390%40betterlinks&new=3658390%40betterlinks; however, a specific released patched version number is not confirmed in the available data - administrators should update BetterLinks to the latest available version via the WordPress plugin dashboard and verify the fix is present. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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