CVE-2017-9781

PoC —

CVSS 3.0

6.1 medium

EPSS

2%p74

Published

Jun 21, 2017 (Jun 21, 2017)

Modified

Jun 17, 2026

Description

A cross site scripting (XSS) vulnerability exists in Check_MK versions 1.4.0x prior to 1.4.0p6, allowing an unauthenticated remote attacker to inject arbitrary HTML or JavaScript via the _username parameter when attempting authentication to webapi.py, which is returned unencoded with content type text/html.

Vendors: check mk project
Products: check mk
Weakness: CWE-79
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (1.6%)

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