---
id: CVE-2026-109979
title: >-
  Related Posts for WordPress <= 3.0.0 - Missing Authorization to Authenticated
  (Contributor+) Sensitive Information Exposure via 'rp4wp_create_link'
  Parameter
summary: >-
  The Related Posts for WordPress plugin for WordPress is vulnerable to
  Sensitive Information Exposure in versions up to, and including, 3.0.0 via the
  'rp4wp_create_link' parameter of the hidden 'rp4wp_link_related' admin page.
  The handle_…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-862
vendor: barrykooij
product: Related Posts for WordPress
affected:
  - related_posts_for_wordpress <= 3.0.0
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-29T01:31:24.070404Z'
published: '2026-10-28'
updated: '2026-10-29'
sourceUpdated: '2026-10-29T01:41:53.590Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-109979'
references:
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/3ab9af6a-bfe7-4da5-8e60-b20f38cbab36?source=cve
  - url: >-
      https://plugins.trac.wordpress.org/browser/related-posts-for-wp/tags/3.0.0/src/Admin/LinkScreen/Page.php#L164
  - url: >-
      https://plugins.trac.wordpress.org/browser/related-posts-for-wp/tags/3.0.0/src/Links/LinkRepository.php#L86
  - url: >-
      https://plugins.trac.wordpress.org/browser/related-posts-for-wp/tags/3.0.0/src/Admin/MetaBox/ManageLinks.php#L98
  - url: >-
      https://plugins.trac.wordpress.org/browser/related-posts-for-wp/tags/3.0.0/src/Links/LinkRepository.php#L310
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&old=3757484%40related-posts-for-wp&new=3757484%40related-posts-for-wp
  - url: >-
      https://plugins.trac.wordpress.org/changeset/3757484/related-posts-for-wp/trunk/src/Admin/LinkScreen/Page.php
tags:
  - cve.org
epss: 0.00298
epssPercentile: 0.2258
ingestedAt: '2026-10-28T07:06:27.121Z'
---

## Overview

The Related Posts for WordPress plugin for WordPress is vulnerable to Sensitive Information Exposure in versions up to, and including, 3.0.0 via the 'rp4wp_create_link' parameter of the hidden 'rp4wp_link_related' admin page. The handle_create_link() handler verifies the nonce and that the current user can edit the parent post, but never checks that the attacker-supplied child post ID is one the user is allowed to read; LinkRepository::insert() stores the arbitrary child ID without validation, and ManageLinks::render() later calls LinkRepository::get_children() in its no-extra-args fast path, which falls through to array_map('get_post', $child_ids) — bypassing read_private_posts/read_post capability checks — and then echoes esc_html($child->post_title) in the parent's editor meta box. This makes it possible for authenticated attackers, with Contributor-level access and above, to read the titles of arbitrary non-public posts (drafts, pending, private, future, trashed) authored by higher-privileged users by linking those post IDs to a draft they own and then reading the resulting meta box.

## Affected

- `related_posts_for_wordpress <= 3.0.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.