CVE-2026-8078 - Vulnerability Details - OpenCVE

Stored cross-site scripting in the global settings change log in Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, and all 2.2.0 versions allows an administrator who can change global settings to store malicious HTML or JavaScript in changelog messages that executes in other users' browsers when they view the Activate Changes page or Audit log.

Attack Vector Network

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Checkmk	Checkmk

No data.

No data.

No data.

References

Link	Providers
https://checkmk.com/werk/17992

History

Mon, 08 Jun 2026 13:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Mon, 08 Jun 2026 13:00:00 +0000

Type	Values Removed	Values Added
Description		Stored cross-site scripting in the global settings change log in Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, and all 2.2.0 versions allows an administrator who can change global settings to store malicious HTML or JavaScript in changelog messages that executes in other users' browsers when they view the Activate Changes page or Audit log.
Title		Fix stored XSS in global settings change log
First Time appeared		Checkmk Checkmk checkmk
Weaknesses		CWE-79
CPEs		cpe:2.3:a:checkmk:checkmk:::::::: cpe:2.3:a:checkmk:checkmk:2.2.0:::::::*
Vendors & Products		Checkmk Checkmk checkmk
References		https://checkmk.com/werk/17992
Metrics		cvssV4_0 `{'score': 4.8, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N'}`

MITRE

Status: PUBLISHED

Assigner: Checkmk

Published: 2026-06-08T12:06:36.666Z

Updated: 2026-06-08T13:03:18.164Z

Reserved: 2026-05-07T11:16:47.854Z

Link: CVE-2026-8078

Vulnrichment

Updated: 2026-06-08T13:03:15.299Z

NVD

Status : Received

Published: 2026-06-08T13:16:33.760

Modified: 2026-06-08T13:16:33.760

Link: CVE-2026-8078

Redhat

No data.

OpenCVE Enrichment

No data.

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