# CVE-2026-109979: Related Posts for WordPress plugin information disclosure

Source: https://junglewise.ai/threats/cve-2026-109979-the-related-posts-for-wordpress-plugin-for-wordpress-is  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-28. Updated: 2026-10-28  
License: CC BY 4.0 with a link back

CVE-2026-109979 · Severity: medium · CVSS 4.3 · Published 2026-10-28

The Related Posts for WordPress plugin allows site editors to link articles together. Attackers with contributor-level access can exploit a flaw in how the plugin validates permissions to read draft or private posts, allowing them to discover the titles of non-public content authored by higher-privileged users by linking those posts to their own drafts.

Vendors: [WebFactory Ltd](https://junglewise.ai/threats/vendors/webfactory-ltd).

## Quick answers

**Is CVE-2026-109979 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-109979 being exploited in the wild.

**How severe is CVE-2026-109979?** Medium severity, with a CVSS score of 4.3, published 28 October 2026.

**Which products and versions are affected?** WebFactory Ltd Related Posts for WordPress up to and including 3.0.0.

**Is there a fix for CVE-2026-109979?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-109979 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-109979?** Check whether you run WebFactory Ltd Related Posts for WordPress at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability exists in the 'rp4wp_link_related' admin page handler, which verifies nonce and edit permissions on the parent post but fails to validate that the attacker-supplied child post ID is readable by the user. The LinkRepository::insert() stores arbitrary child IDs without validation, and later rendering bypasses capability checks by calling array_map('get_post', $child_ids) directly, exposing non-public post titles in the meta box via esc_html().

## Affected products

- WebFactory Ltd Related Posts for WordPress up to and including 3.0.0

## Timeline

- 2026-10-28: disclosed

## References

- [https://plugins.trac.wordpress.org/browser/related-posts-for-wp/tags/3.0.0/src/Admin/LinkScreen/Page.php](https://plugins.trac.wordpress.org/browser/related-posts-for-wp/tags/3.0.0/src/Admin/LinkScreen/Page.php)
- [https://plugins.trac.wordpress.org/browser/related-posts-for-wp/tags/3.0.0/src/Admin/MetaBox/ManageLinks.php](https://plugins.trac.wordpress.org/browser/related-posts-for-wp/tags/3.0.0/src/Admin/MetaBox/ManageLinks.php)