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CVE-2026-66591— WordPress Media LIbrary Assistant plugin <= 3.39 - Cross Site Scripting (XSS) vulnerability

Quick assessment

Affected
David Lingren 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 Media Library Assistant是WordPress基金会的一个媒体库管理助手。 WordPress Media Library Assistant 3.39及之前版本存在跨站脚本漏洞，该漏洞源于对网页生成期间输入的中和不当，可能导致存储型跨站脚本攻击。

CVSS 6.5 · Medium EPSS 0.22% · P12

Affected Version Matrix 1

VendorProduct Version RangeStatus
David Lingren Media LIbrary Assistant n/a≤ 3.39 affected
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I. Basic Information for CVE-2026-66591

Vulnerability Information
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Vulnerability Title
WordPress Media LIbrary Assistant plugin <= 3.39 - Cross Site Scripting (XSS) vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in David Lingren Media LIbrary Assistant allows Stored XSS. This issue affects Media LIbrary Assistant: from n/a through 3.39.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
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
Vulnerability Title
WordPress Media Library Assistant 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Media Library Assistant是WordPress基金会的一个媒体库管理助手。 WordPress Media Library Assistant 3.39及之前版本存在跨站脚本漏洞，该漏洞源于对网页生成期间输入的中和不当，可能导致存储型跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
David Lingren Media LIbrary Assistant n/a ~ 3.39 -

II. Public POCs for CVE-2026-66591

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III. Intelligence Information for CVE-2026-66591

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Vendor Advisories for CVE-2026-66591 (1)

IV. Related Vulnerabilities

Same product: Media LIbrary Assistant
Same vendor: David Lingren
Same weakness: CWE-79

V. Comments for CVE-2026-66591

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