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CVE-2026-6641— Media Library Assistant <= 3.35 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'mla_link_href' Shortcode Parameter

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 3.35 及更早版本中，由于 短代码存在存储型跨站脚本（Stored Cross-Site Scripting, XSS）漏洞。其根本原因在于对 参数的输入清洗和输出转义不足：当 设置为 时， 函数会通过 和 处理该参数的值，但未对 URL 进行适当的转义，随后直接将其输出到 属性中，而未应用 。 这使得拥有贡献者（contributor）及以上权限的认证攻击者能够向页面注入任意 Web 脚本，这些脚本将在用户访问被注入的页面时执行。

CVSS 6.4 · Medium

Possible ATT&CK Techniques 2 AI

T1189.001 T1189 · Drive-by Compromise
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I. Basic Information for CVE-2026-6641

Vulnerability Information
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Vulnerability Title
Media Library Assistant <= 3.35 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'mla_link_href' Shortcode Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The Media Library Assistant plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'mla_gallery' shortcode in versions up to and including 3.35. This is due to insufficient input sanitization and output escaping on the mla_link_href parameter when mla_output is set to 'paginate_links', where the _paginate_links() function processes the value through mla_process_shortcode_parameter() and _replace_query_parameter() without proper URL escaping, then outputs it directly in href attributes without applying esc_url(). This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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 ~ 3.35 -

II. Public POCs for CVE-2026-6641

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III. Intelligence Information for CVE-2026-6641

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Vendor Advisories for CVE-2026-6641 (1)

Vendor Pages for CVE-2026-6641 (2)

Other References for CVE-2026-6641 (4)

Same Patch Batch · dglingren · 2026-09-11 · 3 CVEs total

CVE-2026-6642 6.4 MEDIUM Media Library Assistant <= 3.35 - Authenticated (Author+) Stored Cross-Site Scripting via
CVE-2026-6640 6.4 MEDIUM Media Library Assistant <= 3.35 - Authenticated (Contributor+) Stored Cross-Site Scripting

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-6641

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