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CVE-2026-19914— Welcart e-Commerce <= 2.12.1 - Unauthenticated Stored Cross-Site Scripting via 'custom_order' Parameter

Quick assessment

Affected
uscnanbu Welcart e-Commerce
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 Welcart e-Commerce是WordPress基金会开源的一款为内容管理系统提供在线商店功能的插件。 WordPress Welcart e-Commerce 2.12.1及之前版本存在跨站脚本漏洞，该漏洞源于对custom_order参数输入清理和输出转义不足，存在存储型跨站脚本漏洞，可能导致未经身份验证的攻击者注入任意Web脚本，在管理员查看受影响订单时执行。

CVSS 7.2 · High EPSS 0.34% · P25

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise

Affected Version Matrix 1

VendorProduct Version RangeStatus
uscnanbu Welcart e-Commerce ≤ 2.12.1 affected
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I. Basic Information for CVE-2026-19914

Vulnerability Information
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Vulnerability Title
Welcart e-Commerce <= 2.12.1 - Unauthenticated Stored Cross-Site Scripting via 'custom_order' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The Welcart e-Commerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'custom_order' parameter in all versions up to, and including, 2.12.1 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. The injected payload is delivered via the guest checkout form, requiring no authentication, and executes when an administrator views the affected order in the WordPress admin panel.
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
Vulnerability Title
WordPress Welcart e-Commerce 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Welcart e-Commerce是WordPress基金会开源的一款为内容管理系统提供在线商店功能的插件。 WordPress Welcart e-Commerce 2.12.1及之前版本存在跨站脚本漏洞，该漏洞源于对custom_order参数输入清理和输出转义不足，存在存储型跨站脚本漏洞，可能导致未经身份验证的攻击者注入任意Web脚本，在管理员查看受影响订单时执行。
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
uscnanbu Welcart e-Commerce 0 ~ 2.12.1 -

II. Public POCs for CVE-2026-19914

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III. Intelligence Information for CVE-2026-19914

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Patches & Fixes for CVE-2026-19914 (1)

Proof of Concept for CVE-2026-19914 (1)

Vendor Pages for CVE-2026-19914 (1)

Other References for CVE-2026-19914 (1)

IV. Related Vulnerabilities

Same product: Welcart e-Commerce
Same vendor: uscnanbu
Same weakness: CWE-79

V. Comments for CVE-2026-19914

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