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CVE-2026-97640— WPConsent <= 1.1.9 - Unauthenticated Stored Cross-Site Scripting via Comment Content via Simple HTML DOM Parser Noise-Key Restoration (mXSS)

Quick assessment

Affected
smub WPConsent – Cookie Banner & Cookie Consent for Privacy Compliance (GDPR / CCPA / EU Compliance Cookie Notice)
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 插件"WPConsent – Cookie Banner & Cookie Consent for Privacy Compliance（GDPR/CCPA/EU 合规 Cookie 通知）”在所有 1.1.9 及之前的版本中，由于输入清理和输出转义不足，存在通过评论内容利用 Simple HTML DOM Parser 的噪声键恢复机制（mXSS）导致的存储型跨站脚本（Stored XSS）漏洞。该漏洞允许未认证的攻击者在页面中注入任意 Web 脚本，当用户访问被注入的页面时，这些脚本将被执行

CVSS 7.2 · High EPSS 0.24% · P14

Possible ATT&CK Techniques 1 AI

T1059.007 · JavaScript

Affected Version Matrix 1

VendorProduct Version RangeStatus
smub WPConsent – Cookie Banner & Cookie Consent for Privacy Compliance (GDPR / CCPA / EU Compliance Cookie Notice) ≤ 1.1.9 affected
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I. Basic Information for CVE-2026-97640

Vulnerability Information
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Vulnerability Title
WPConsent <= 1.1.9 - Unauthenticated Stored Cross-Site Scripting via Comment Content via Simple HTML DOM Parser Noise-Key Restoration (mXSS)
Source: CVE Program / CVE List V5
Vulnerability Description
The WPConsent – Cookie Banner & Cookie Consent for Privacy Compliance (GDPR / CCPA / EU Compliance Cookie Notice) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content via Simple HTML DOM Parser Noise-Key Restoration (mXSS) in all versions up to, and including, 1.1.9 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 the Script Blocking feature to be enabled, and the exploit chain depends on an attacker submitting two coordinated comments — one embedding event-handler syntax inside an allowed &lt;code&gt; element and one placing the deterministic ___noise___ restoration key inside an allowed &lt;abbr title=""&gt; attribute — with the key offset confirmable via an unauthenticated wpconsent_debug=1 request.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/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
smub WPConsent – Cookie Banner & Cookie Consent for Privacy Compliance (GDPR / CCPA / EU Compliance Cookie Notice) 0 ~ 1.1.9 -

II. Public POCs for CVE-2026-97640

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-97640

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Patches & Fixes for CVE-2026-97640 (1)

Vendor Advisories for CVE-2026-97640 (1)

Vendor Pages for CVE-2026-97640 (1)

Other References for CVE-2026-97640 (1)

Other References for CVE-2026-97640 (1)

IV. Related Vulnerabilities

Same vendor: smub
Same weakness: CWE-79

V. Comments for CVE-2026-97640

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