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CVE-2026-60043— XSS in backend

Quick assessment

Affected
MB connect line mbCONNECT24
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.

未经身份验证的远程攻击者可以对已登录的后端用户发起跨站脚本（XSS）攻击，从而执行多项关键系统操作。攻击者借此可能关闭服务器或恢复已上传的备份，导致系统完整性和可用性受损。

CVSS 9.3 · Critical
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I. Basic Information for CVE-2026-60043

Vulnerability Information
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Vulnerability Title
XSS in backend
Source: CVE Program / CVE List V5
Vulnerability Description
An unauthenticated remote attacker can perform a XSS attack on a logged in backend user allowing for execution of multiple critical system actions. This could allow an attacker to shutdown the server or restore an uploaded backup. This can result in a loss of integrity and availability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:H
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
MB connect line mbCONNECT24 2.0.0 ~ 2.21.0 -
MB connect line mymbCONNECT24 2.0.0 ~ 2.21.0 -
Helmholz myREX24V2 2.0.0 ~ 2.21.0 -
Helmholz myREX24V2.virtual 2.0.0 ~ 2.21.0 -

II. Public POCs for CVE-2026-60043

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-60043

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Other References for CVE-2026-60043 (2)

Same Patch Batch · MB connect line · 2026-11-10 · 12 CVEs total

CVE-2026-60041 8.1 HIGH CSRF in backend
CVE-2026-60040 7.5 HIGH DoS in backup creation
CVE-2026-60046 7.5 HIGH DoS via password reset
CVE-2026-60044 7.5 HIGH Static backup password
CVE-2026-60037 7.2 HIGH OpenSSL command injection in device importer
CVE-2026-60038 7.2 HIGH OpenSSL command injection in ImportPKCS12
CVE-2026-60039 7.2 HIGH Command injection in backup restore
CVE-2026-60035 7.2 HIGH Command injection in network auth
CVE-2026-60036 7.2 HIGH Command injection in patch activate
CVE-2026-60042 5.3 MEDIUM Authentication bypass in com_check
CVE-2026-60045 4.9 MEDIUM Arbitrary file upload

IV. Related Vulnerabilities

Same product: mbCONNECT24
Same vendor: MB connect line
Same weakness: CWE-79