{"id":"CVE-2026-109979","aliases":[],"title":"Related Posts for WordPress <= 3.0.0 - Missing Authorization to Authenticated (Contributor+) Sensitive Information Exposure via 'rp4wp_create_link' Parameter","titleSource":"Wordfence","descriptionSource":"Wordfence","products":[{"vendor":"barrykooij","name":"Related Posts for WordPress","platforms":[],"versions":[{"version":"0","status":"affected","lessThanOrEqual":"3.0.0","versionType":"semver"}],"defaultStatus":"unaffected","source":"Wordfence","url":"https://www.cve.org/CVERecord?id=CVE-2026-109979"}],"remediation":[],"description":"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box.","severity":"medium","score":4.3,"published":"2026-10-28T06:45:10.920Z","modified":"2026-10-28T06:45:10.920Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://www.wordfence.com/threat-intel/vulnerabilities/id/3ab9af6a-bfe7-4da5-8e60-b20f38cbab36?source=cve","https://plugins.trac.wordpress.org/browser/related-posts-for-wp/tags/3.0.0/src/Admin/LinkScreen/Page.php#L164","https://plugins.trac.wordpress.org/browser/related-posts-for-wp/tags/3.0.0/src/Links/LinkRepository.php#L86","https://plugins.trac.wordpress.org/browser/related-posts-for-wp/tags/3.0.0/src/Admin/MetaBox/ManageLinks.php#L98","https://plugins.trac.wordpress.org/browser/related-posts-for-wp/tags/3.0.0/src/Links/LinkRepository.php#L310","https://plugins.trac.wordpress.org/changeset?reponame=&old=3757484%40related-posts-for-wp&new=3757484%40related-posts-for-wp","https://plugins.trac.wordpress.org/changeset/3757484/related-posts-for-wp/trunk/src/Admin/LinkScreen/Page.php"],"sources":[{"name":"CVE","id":"CVE-2026-109979","modified":"2026-10-28T06:45:10.920Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-109979"}],"assessments":[{"source":"Wordfence","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","score":4.3}],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T20:55:31.375Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-28T10:00:34.949Z","attemptedAt":"2026-10-28T10:00:34.949Z"},{"source":"GHSA","status":"available","checkedAt":"2026-10-28T10:00:32.498Z","attemptedAt":"2026-10-28T10:00:32.498Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-28T10:00:33.097Z","attemptedAt":"2026-10-28T10:00:33.097Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-10-28T10:00:32.971Z","attemptedAt":"2026-10-28T10:00:32.971Z"}],"evidence":[{"source":"GitHub Advisory Database","id":"GHSA-88jc-p652-m75v","url":"https://github.com/advisories/GHSA-88jc-p652-m75v","modified":"2026-10-28T09:32:02Z","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","checkedAt":"2026-10-28T10:00:32.498Z"},{"source":"ENISA EUVD","id":"EUVD-2026-111747","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-111747","modified":"Oct 28, 2026, 6:45:10 AM","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","checkedAt":"2026-10-28T10:00:33.097Z"},{"source":"NVD","id":"CVE-2026-109979","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109979","modified":"2026-10-28T07:16:45.453","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","checkedAt":"2026-10-28T10:00:34.949Z"}]}