GHSA-88JC-P652-M75V

Vulnerability from github – Published: 2026-10-28 09:31 – Updated: 2026-10-28 09:31
VLAI
Details

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
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2026-109979"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-28T07:16:45Z",
    "severity": "MODERATE"
  },
  "details": "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 \u0027rp4wp_create_link\u0027 parameter of the hidden \u0027rp4wp_link_related\u0027 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(\u0027get_post\u0027, $child_ids) \u2014 bypassing read_private_posts/read_post capability checks \u2014 and then echoes esc_html($child-\u003epost_title) in the parent\u0027s 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": "GHSA-88jc-p652-m75v",
  "modified": "2026-10-28T09:31:54Z",
  "published": "2026-10-28T09:31:54Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-109979"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/related-posts-for-wp/tags/3.0.0/src/Admin/LinkScreen/Page.php#L164"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/related-posts-for-wp/tags/3.0.0/src/Admin/MetaBox/ManageLinks.php#L98"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/related-posts-for-wp/tags/3.0.0/src/Links/LinkRepository.php#L310"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/related-posts-for-wp/tags/3.0.0/src/Links/LinkRepository.php#L86"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset/3757484/related-posts-for-wp/trunk/src/Admin/LinkScreen/Page.php"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset?reponame=\u0026old=3757484%40related-posts-for-wp\u0026new=3757484%40related-posts-for-wp"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/3ab9af6a-bfe7-4da5-8e60-b20f38cbab36?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.