Vulnerabilities / MDTF – Meta Data and Taxonomies Filter / WPSEC-2026-0969
MDTF – Meta Data and Taxonomies Filter <= 1.3.9 - Authenticated (Contributor+) Arbitrary Post Meta Update via Filter Data on Post Save
Medium 4.3
CWE-915Fixed in 1.4.0
- ID
- WPSEC-2026-0969
- Plugin
- MDTF – Meta Data and Taxonomies Filter (wp-meta-data-filter-and-taxonomy-filter)
- Affected
- all versions before 1.4.0
- Remediation
- Update to 1.4.0 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- Weakness
- CWE-915
- Usage
- Plugin Low · Affected versions Low among sites WPSec scans, 2026-10-14
- Attack surface
- MDTF – Meta Data and Taxonomies Filter on WPSec AttackSurface
- Fix released
- Published
Description
The MDTF – Meta Data and Taxonomies Filter plugin for WordPress is vulnerable to arbitrary post meta modification via the 'page_meta_data_filter' post save data in all versions up to, and including, 1.3.9, due to the save_post handler writing every key of the submitted page_meta_data_filter array, with its unsanitized value, as post meta. The keys are not restricted to the plugin's own 'medafi_' prefix. This makes it possible for authenticated attackers, with Contributor-level access and above, to set arbitrary post meta, including protected underscore-prefixed keys, on posts they can edit.
References
- https://wpsec.com/vuln/WPSEC-2026-0969/
- 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/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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