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CVE-2026-18344— Responsive Thumbnail Slider < 1.1.53 - Reflected Cross-Site Scripting via 'id' Parameter

Quick assessment

Affected
nik00726 Responsive Thumbnail Slider
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 Responsive Thumbnail Slider是WordPress基金会的一款响应式缩略图滑块组件。 WordPress Responsive Thumbnail Slider 1.1.53之前版本存在跨站脚本漏洞，该漏洞源于responsive_thumbnail_image_management()函数对输入清理和输出转义不足，将$_GET['id']参数直接输出到双引号HTML属性且未调用esc_attr()，可能导致未经身份验证的攻击者注入任意Web脚本，并诱导用户点击

CVSS 6.1 · Medium EPSS 0.36% · P27

Affected Version Matrix 1

VendorProduct Version RangeStatus
nik00726 Responsive Thumbnail Slider < 1.1.53 affected
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I. Basic Information for CVE-2026-18344

Vulnerability Information
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Vulnerability Title
Responsive Thumbnail Slider < 1.1.53 - Reflected Cross-Site Scripting via 'id' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The Wp Responsive Thumbnail Slider plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'id' parameter in versions up to, and excluding, 1.1.53. This is due to insufficient input sanitization and output escaping in the responsive_thumbnail_image_management() function, which echoes $_GET['id'] directly into a double-quoted HTML attribute with no esc_attr() call. The only guard is a loose PHP numeric comparison ($_GET['id']>0) that a string beginning with a numeric prefix trivially satisfies, and the addslashes() applied by wp_magic_quotes() is inert in HTML-attribute context because backslash is not an HTML escape character. 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 specially crafted link.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/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
Vulnerability Title
WordPress Responsive Thumbnail Slider 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Responsive Thumbnail Slider是WordPress基金会的一款响应式缩略图滑块组件。 WordPress Responsive Thumbnail Slider 1.1.53之前版本存在跨站脚本漏洞，该漏洞源于responsive_thumbnail_image_management()函数对输入清理和输出转义不足，将$_GET['id']参数直接输出到双引号HTML属性且未调用esc_attr()，可能导致未经身份验证的攻击者注入任意Web脚本，并诱导用户点击
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
nik00726 Responsive Thumbnail Slider 0 ~ 1.1.53 -

II. Public POCs for CVE-2026-18344

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III. Intelligence Information for CVE-2026-18344

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Vendor Advisories for CVE-2026-18344 (1)

IV. Related Vulnerabilities

Same vendor: nik00726
Same weakness: CWE-79

V. Comments for CVE-2026-18344

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