CVE-2026-29964

HSC MailInspector v5.3.3-7 contains a Cross-Site Scripting (XSS) vulnerability in the /tap/tap.php endpoint due to improper neutralization of user-controlled input using alternate or obfuscated JavaScript syntax. The endpoint reflects unsanitized user input in HTTP responses without adequate output encoding, allowing a remote attacker to execute arbitrary JavaScript code in the context of a victim's browser.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/sql3t0/cve-disclosures	Third Party Advisory
https://github.com/sql3t0/cve-disclosures/blob/main/03_-_CVE-2026-29964_XSS.md	Third Party Advisory
https://hsclabs.com/pt-br/mailinspector/	Product

Configurations

Configuration 1 (hide)

cpe:2.3:a:hsclabs:mailinspector:5.3.3-7:*:*:*:*:*:*:*

History

19 Oct 2026, 22:10

Type	Values Removed	Values Added
Summary		(es) HSC MailInspector v5.3.3-7 contiene una vulnerabilidad de Cross-Site Scripting (XSS) en el endpoint /tap/tap.php debido a una neutralización inadecuada de la entrada controlada por el usuario utilizando sintaxis JavaScript alternativa u ofuscada. El endpoint refleja entrada de usuario no saneada en respuestas HTTP sin una codificación de salida adecuada, permitiendo a un atacante remoto ejecutar código JavaScript arbitrario en el contexto del navegador de una víctima.

Information

Published : 2026-05-18 18:17

Updated : 2026-10-19 22:10

NVD link : CVE-2026-29964

Mitre link : CVE-2026-29964

CVE.ORG link : CVE-2026-29964

JSON object : View

Products Affected

hsclabs

mailinspector

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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