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CVE-2026-3610— HSC Cybersecurity Mailinspector URL mliUserValidation.php cross site scripting

CVSS 4.3 · Medium EPSS 0.27% · P19

Possible ATT&CK Techniques 1AI

T1059.007 · JavaScript
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I. Basic Information for CVE-2026-3610

Vulnerability Information
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Vulnerability Title
HSC Cybersecurity Mailinspector URL mliUserValidation.php cross site scripting
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in HSC Cybersecurity Mailinspector up to 5.3.2-3. Affected by this issue is some unknown functionality of the file /mailinspector/mliUserValidation.php of the component URL Handler. The manipulation of the argument error_description results in cross site scripting. The attack may be performed from remote. The exploit has been made public and could be used. Upgrading to version 5.4.0 can resolve this issue. You should upgrade the affected component. The vendor was contacted early and responded very professional: "We have already implemented the fix and made a hotfix available to affected customers, ensuring mitigation while the official release 5.4.0 has not yet been published. This allows customers to address the issue immediately, outside the regular release cycle."
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
Vulnerability Title
HSC Cybersecurity Mailinspector 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
HSC Cybersecurity Mailinspector是法国HSC Cybersecurity公司的一个电子邮件安全网管系统。 HSC Cybersecurity Mailinspector 5.3.2-3及之前版本存在代码注入漏洞，该漏洞源于对文件/mailinspector/mliUserValidation.php中参数error_description的错误操作，可能导致跨站脚本攻击。
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

VendorProductAffected VersionsCPESubscribe
HSC CybersecurityMailinspector 5.3.2-3 -

II. Public POCs for CVE-2026-3610

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III. Intelligence Information for CVE-2026-3610

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Vendor Advisories for CVE-2026-3610 (2)

Other References for CVE-2026-3610 (1)

IV. Related Vulnerabilities

Same weakness: CWE-79

V. Comments for CVE-2026-3610

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