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CVE-2026-15726— Serious Slider <= 1.4.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'theme' Shortcode Attribute

Quick assessment

Affected
cryout-creations Serious 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 Serious Slider是WordPress基金会的一款滑块插件。 WordPress Serious Slider 1.4.0及之前版本存在跨站脚本漏洞，该漏洞源于对'theme'短代码属性输入清理和输出转义不足，可能导致具有贡献者级别及以上访问权限的认证攻击者注入任意Web脚本，当用户访问被注入页面时执行。

CVSS 6.4 · Medium EPSS 0.35% · P26

Affected Version Matrix 1

VendorProduct Version RangeStatus
cryout-creations Serious Slider ≤ 1.4.0 affected
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I. Basic Information for CVE-2026-15726

Vulnerability Information
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Vulnerability Title
Serious Slider <= 1.4.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'theme' Shortcode Attribute
Source: CVE Program / CVE List V5
Vulnerability Description
The Serious Slider plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'theme' Shortcode Attribute in all versions up to, and including, 1.4.0 due to insufficient input sanitization and output escaping. 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 Serious Slider 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Serious Slider是WordPress基金会的一款滑块插件。 WordPress Serious Slider 1.4.0及之前版本存在跨站脚本漏洞，该漏洞源于对'theme'短代码属性输入清理和输出转义不足，可能导致具有贡献者级别及以上访问权限的认证攻击者注入任意Web脚本，当用户访问被注入页面时执行。
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
cryout-creations Serious Slider 0 ~ 1.4.0 -

II. Public POCs for CVE-2026-15726

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III. Intelligence Information for CVE-2026-15726

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Patches & Fixes for CVE-2026-15726 (3)

Vendor Pages for CVE-2026-15726 (1)

IV. Related Vulnerabilities

Same product: Serious Slider
Same vendor: cryout-creations
Same weakness: CWE-79

V. Comments for CVE-2026-15726

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