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