CVE-2026-120597— Welcart e-Commerce Plugin paymentESCOTT.main.class.php error_page_message cross site scripting

Quick assessment

Affected

Welcart e-Commerce Plugin

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.

在 WordPress 平台上的 Welcart 电子商务插件（版本 2.12.6 及以下）中发现了一个安全漏洞。该漏洞影响文件中的函数。攻击者可通过操纵参数引发跨站脚本攻击（XSS）。该攻击可远程发起，且利用代码已在公开渠道发布，存在被实际利用的风险。升级至版本 2.12.7 可缓解此问题，建议立即升级受影响的组件。修复方案中，相关值在输出前已通过函数进行转义处理。厂商已在早期收到报告，并以高度专业的态度迅速响应，及时发布了含修复补丁的产品版本。

CVSS 4.3 · Medium Updated Nov 03, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

Welcart e-Commerce Plugin paymentESCOTT.main.class.php error_page_message cross site scripting

Source: CVE Program / CVE List V5

Vulnerability Description

A vulnerability was identified in Welcart e-Commerce Plugin up to 2.12.6 on WordPress. This affects the function ESCOTT_MAIN::error_page_message of the file classes/paymentESCOTT.main.class.php. Such manipulation of the argument ResponseCd leads to cross site scripting. The attack can be launched remotely. The exploit is publicly available and might be used. Upgrading to version 2.12.7 mitigates this issue. It is recommended to upgrade the affected component. The value is now escaped with esc_html() before output. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/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
Welcart	e-Commerce Plugin	2.12.0	`cpe:2.3:a:welcart:e-commerce_plugin::::::::`

II. Public POCs for CVE-2026-120597

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2026-120597

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Vendor Pages for CVE-2026-120597 (1)

🔗 Welcart e-Commerce – WordPress plugin | WordPress.org patch

Other References for CVE-2026-120597 (5)

https://github.com/bevennyamande/welcart-poc exploit
https://vuldb.com/cve/CVE-2026-120597 third-party-advisory
https://vuldb.com/vuln/429933/cti signature permissions-required
https://vuldb.com/vuln/429933 vdb-entry technical-description
https://vuldb.com/submit/1039186 third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-120597

IV. Related Vulnerabilities

Same vendor: Welcart

Same weakness: CWE-79