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

Quick assessment

Affected
dglingren Media Library Assistant
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress 的 Media Library Assistant 插件在所有 3.42 及更早版本中，由于输入清理和输出转义不足，存在通过 'search-string' 参数引发的反射型跨站脚本（XSS）漏洞。这使得未认证的攻击者能够向页面注入任意网页脚本，前提是攻击者能成功诱使用户执行某些操作（例如点击链接）。利用该漏洞需要目标站点具备以下公开可访问的页面条件：该页面包含一个配置了分页输出模式以及使用了会反射 令牌（token）的 模板的 短代码，并且拥有足够多的附件以触发分页功能。

CVSS 4.7 · Medium EPSS 0.30% · P23
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I. Basic Information for CVE-2026-103875

Vulnerability Information
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Vulnerability Title
Media Library Assistant <= 3.42 - Reflected Cross-Site Scripting via 'search-string' Parameter via {+request:...+} in Pagination Links
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
dglingren Media Library Assistant 0 ~ 3.42 -

II. Public POCs for CVE-2026-103875

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III. Intelligence Information for CVE-2026-103875

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Patches & Fixes for CVE-2026-103875 (1)

Proof of Concept for CVE-2026-103875 (1)

Vendor Pages for CVE-2026-103875 (2)

Other References for CVE-2026-103875 (1)

IV. Related Vulnerabilities

Same product: Media Library Assistant
Same vendor: dglingren
Same weakness: CWE-79