What’s Vulnerable › Vulnerabilities

CVE-2026-3569: Liaison Site Prober <= 1.2.1 - Missing Authorization to Unauthenticated Information Exposure in '/logs' REST API Endpoint

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-24 · updated 2026-06-17
• Weakness: CWE-862

Description

The Liaison Site Prober plugin for WordPress is vulnerable to Information Exposure in all versions up to and including 1.2.1 via the /wp-json/site-prober/v1/logs REST API endpoint. The permissions_read() permission callback unconditionally returns true (via __return_true()) instead of checking for appropriate capabilities. This makes it possible for unauthenticated attackers to retrieve sensitive audit log data including IP addresses, user IDs, usernames, login/logout events, failed login attempts, and detailed activity descriptions.

Affected products

• Liaison Site Prober: through 1.2.1

References

• https://plugins.trac.wordpress.org/browser/liaison-site-prober/tags/1.2.1/includes/class-liaison-rest-controller.php#L19
• https://plugins.trac.wordpress.org/browser/liaison-site-prober/tags/1.2.1/includes/class-liaison-rest-controller.php#L50
• https://plugins.trac.wordpress.org/browser/liaison-site-prober/tags/1.2.1/includes/class-liaison-rest-controller.php#L90
• https://plugins.trac.wordpress.org/browser/liaison-site-prober/trunk/includes/class-liaison-rest-controller.php#L19
• https://plugins.trac.wordpress.org/browser/liaison-site-prober/trunk/includes/class-liaison-rest-controller.php#L50
• https://plugins.trac.wordpress.org/browser/liaison-site-prober/trunk/includes/class-liaison-rest-controller.php#L90
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3481019%40liaison-site-prober&new=3481019%40liaison-site-prober&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/eda5addb-40e2-4187-b803-34500b36be0a?source=cve

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