Auth bypass in Liaison Site Prober
CVE-2026-3569
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…
Vulnerability class: Broken Access Control
EPSS: 0.000 (3.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Liaison Site Prober — versions 0
Weakness classification (CWE)
References
- www.wordfence.com/threat-intel/vulnerabilities/id/eda5addb-40e2-4187-b803-34500…
- plugins.trac.wordpress.org/browser/liaison-site-prober/trunk/includes/class-lia…
- plugins.trac.wordpress.org/browser/liaison-site-prober/tags/1.2.1/includes/clas…
- plugins.trac.wordpress.org/browser/liaison-site-prober/trunk/includes/class-lia…
- plugins.trac.wordpress.org/browser/liaison-site-prober/tags/1.2.1/includes/clas…
- plugins.trac.wordpress.org/browser/liaison-site-prober/trunk/includes/class-lia…
- plugins.trac.wordpress.org/browser/liaison-site-prober/tags/1.2.1/includes/clas…
- plugins.trac.wordpress.org/changeset
Frequently asked questions
- What is CVE-2026-3569?
- CVE-2026-3569 is a medium-severity vulnerability in Liaison Site Prober, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-04-24.
- How severe is CVE-2026-3569?
- Medium severity. CVSS v3 base score is 5.3 out of 10.