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CVE-2026-8698— Cryptocurrency Prijsvergelijking Widget <= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'width' Shortcode Attribute

Quick assessment

Affected
cryptoprijzen Cryptocurrency Prijsvergelijking Widget
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和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Cryptocurrency Prijsvergelijking Widget 1.0版本存在跨站脚本漏洞，该漏洞源于as_get_coin_shortcode函数输出转义不足，可能导致经过身份验证的攻击者注入任意W

CVSS 6.4 · Medium EPSS 0.19% · P8

Affected Version Matrix 1

VendorProduct Version RangeStatus
cryptoprijzen Cryptocurrency Prijsvergelijking Widget ≤ 1.0 affected
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I. Basic Information for CVE-2026-8698

Vulnerability Information
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Vulnerability Title
Cryptocurrency Prijsvergelijking Widget <= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'width' Shortcode Attribute
Source: CVE Program / CVE List V5
Vulnerability Description
The Cryptocurrency Prijsvergelijking Widget plugin for WordPress is vulnerable to Stored Cross-Site Scripting in version 1.0. This is due to insufficient output escaping in the as_get_coin_shortcode() function, which renders the 'width' (and 'height') shortcode attribute directly into the style attribute of an <iframe> element without applying any escaping function such as esc_attr(). An attacker-controlled value like '100px;"onload="alert(1)" x="' terminates the style attribute prematurely and injects an arbitrary HTML attribute into the iframe tag. 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
Vulnerability Title
WordPress plugin Cryptocurrency Prijsvergelijking Widget 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Cryptocurrency Prijsvergelijking Widget 1.0版本存在跨站脚本漏洞，该漏洞源于as_get_coin_shortcode函数输出转义不足，可能导致经过身份验证的攻击者注入任意W
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
cryptoprijzen Cryptocurrency Prijsvergelijking Widget 0 ~ 1.0 -

II. Public POCs for CVE-2026-8698

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III. Intelligence Information for CVE-2026-8698

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News Coverage for CVE-2026-8698 (1)

IV. Related Vulnerabilities

Same weakness: CWE-79

V. Comments for CVE-2026-8698

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