CVE-2025-62970 identifies a missing authorization vulnerability in the Link Whisper Free plugin developed by Spencer Haws, affecting versions up to and including 0.8.8. The vulnerability stems from incorrectly configured access control security levels, allowing unauthenticated remote attackers to access certain plugin functionalities or data that should be restricted. The plugin is a WordPress SEO tool designed to assist with internal linking strategies. The vulnerability's CVSS 3.1 base score is 5.3, indicating a medium severity level, with the vector AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N. This means the attack can be performed remotely over the network without any privileges or user interaction, impacting confidentiality but not integrity or availability. No known exploits have been reported in the wild as of the publication date. The issue is primarily an access control flaw where authorization checks are missing or improperly implemented, potentially exposing sensitive SEO-related data or plugin configurations. The vulnerability was reserved and published in late October 2025, with no patch links currently available, suggesting that a fix may be forthcoming or under development. Organizations using this plugin should be aware of the risk and monitor for updates.

For European organizations, the primary impact of this vulnerability lies in the potential unauthorized disclosure of sensitive SEO data managed by the Link Whisper Free plugin. While it does not affect data integrity or system availability, the confidentiality breach could expose internal linking strategies, site structure insights, or other metadata that could be leveraged by attackers for further reconnaissance or targeted attacks. Organizations relying heavily on WordPress for their web presence and utilizing SEO tools like Link Whisper Free may face increased risk of information leakage. This could be particularly concerning for companies in competitive industries or those with sensitive web content. Although no active exploitation is known, the ease of exploitation without authentication increases the risk profile. The impact on European organizations depends on the prevalence of this plugin within their WordPress environments and the sensitivity of the exposed data. Additionally, regulatory considerations such as GDPR may require disclosure or remediation efforts if personal data is indirectly exposed through this vulnerability.

1. Monitor official sources and the plugin vendor for the release of a security patch addressing CVE-2025-62970 and apply it promptly upon availability. 2. Until a patch is released, implement manual access control measures at the web server or application firewall level to restrict access to the plugin’s administrative or sensitive endpoints. 3. Review and harden WordPress user roles and permissions to minimize exposure of plugin functionalities to unauthenticated users. 4. Conduct an audit of the plugin’s usage and data exposure to identify any sensitive information that could be at risk. 5. Consider temporarily disabling or replacing the Link Whisper Free plugin with alternative SEO tools that do not have known vulnerabilities. 6. Employ web application firewalls (WAFs) with custom rules to detect and block suspicious requests targeting the plugin. 7. Educate website administrators about the risks of using outdated or unpatched plugins and encourage regular security assessments of WordPress environments.