# MDTF – Meta Data and Taxonomies Filter <= 1.3.9 - Authenticated (Contributor+) Sensitive Information Exposure via mdf_value Shortcode

- **ID:** WPSEC-2026-0967
- **Plugin:** MDTF – Meta Data and Taxonomies Filter (`wp-meta-data-filter-and-taxonomy-filter`), https://wordpress.org/plugins/wp-meta-data-filter-and-taxonomy-filter/
- **Affected versions:** all versions before 1.4.0
- **Fixed in:** 1.4.0 (Update to 1.4.0 or later.)
- **Severity:** Medium 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)
- **Weakness:** CWE-200
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-10-14)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/wp-meta-data-filter-and-taxonomy-filter
- **Fix released:** 2026-10-13
- **Published:** 2026-10-14
- **URL:** https://wpsec.com/vuln/WPSEC-2026-0967/

## Description

The MDTF – Meta Data and Taxonomies Filter plugin for WordPress is vulnerable to Sensitive Information Exposure via the 'mdf_value' shortcode in all versions up to, and including, 1.3.9, due to the shortcode returning the meta value of any post ID and meta key without checking whether the current user may read that post or whether the key is protected. This makes it possible for authenticated attackers, with Contributor-level access and above, to read meta of private and draft posts, including protected internal meta keys.

## References

- https://wpsec.com/vuln/WPSEC-2026-0967/
- https://plugins.svn.wordpress.org/wp-meta-data-filter-and-taxonomy-filter/tags/1.4.0/
- https://wordpress.org/plugins/wp-meta-data-filter-and-taxonomy-filter/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-0967/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.