CVE-2026-109979

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Related Posts for WordPress", "vendor": "barrykooij", "versions": [{"lessThanOrEqual": "3.0.0", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "security@wordfence.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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', $child_ids) \u2014 bypassing read_private_posts/read_post capability checks \u2014 and then echoes esc_html($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."}], "id": "CVE-2026-109979", "lastModified": "2026-10-29T02:16:47.690", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "security@wordfence.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-109979", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-29T01:31:24.070404Z", "version": "2.0.3"}}]}, "published": "2026-10-28T07:16:45.453", "references": [{"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/related-posts-for-wp/tags/3.0.0/src/Admin/LinkScreen/Page.php#L164"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/related-posts-for-wp/tags/3.0.0/src/Admin/MetaBox/ManageLinks.php#L98"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/related-posts-for-wp/tags/3.0.0/src/Links/LinkRepository.php#L310"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/related-posts-for-wp/tags/3.0.0/src/Links/LinkRepository.php#L86"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/changeset/3757484/related-posts-for-wp/trunk/src/Admin/LinkScreen/Page.php"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/changeset?reponame=&old=3757484%40related-posts-for-wp&new=3757484%40related-posts-for-wp"}, {"source": "security@wordfence.com", "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/3ab9af6a-bfe7-4da5-8e60-b20f38cbab36?source=cve"}], "sourceIdentifier": "security@wordfence.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-862"}], "source": "security@wordfence.com", "type": "Secondary"}]}

{}

{"created": "2026-10-28T09:00:10.736763+00:00", "updated": "2026-10-28T09:00:10.736769+00:00", "vendors": []}