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CVE-2026-118070— Welcart e-Commerce <= 2.12.5 - Unauthenticated Stored Cross-Site Scripting via 'gid' 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 的 Welcart 电子商务插件在所有 2.12.5 及以下版本中，由于输入清理和输出转义不足，存在通过"gid"参数触发的存储型跨站脚本（Stored XSS）漏洞。该漏洞允许未认证的攻击者在网页中注入任意 Web 脚本，当用户访问被注入的页面时，这些脚本将被执行。攻击流程如下：未认证的访客伪造"ROBOT PAYMENT"的浏览器返回请求，将恶意的"gid"值存入订单元数据；随后，当管理员在 WordPress 管理后台打开该订单时，恶意脚本即被触发执行。

CVSS 7.2 · High
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I. Basic Information for CVE-2026-118070

Vulnerability Information
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Vulnerability Title
Welcart e-Commerce <= 2.12.5 - Unauthenticated Stored Cross-Site Scripting via 'gid' 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 'gid' parameter in all versions up to, and including, 2.12.5 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 payload is staged by an unauthenticated visitor who forges the ROBOT PAYMENT browser-return request, storing the malicious gid value in order metadata; the script then fires when an administrator opens that 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

Affected Products

Vendor Product Affected Versions CPE Subscribe
uscnanbu Welcart e-Commerce 0 ~ 2.12.5 -

II. Public POCs for CVE-2026-118070

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III. Intelligence Information for CVE-2026-118070

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Other References for CVE-2026-118070 (6)

IV. Related Vulnerabilities

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