Description
Stored cross-site scripting (XSS) in Checkmk 2.5.0 (beta) before 2.5.0b2 allows authenticated users with permission to create hosts or services to execute arbitrary JavaScript in the browsers of other users performing searches in the Unified Search feature.
Published: 2026-03-31
Score: 8.6 High
EPSS: < 1% Very Low
KEV: No
Impact: Stored Cross‑Site Scripting
Action: Immediate Patch
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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References
History

Thu, 02 Apr 2026 12:15:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:checkmk:checkmk:2.5.0:b1:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'}


Tue, 31 Mar 2026 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 31 Mar 2026 14:30:00 +0000

Type Values Removed Values Added
Description Stored cross-site scripting (XSS) in Checkmk 2.5.0 (beta) before 2.5.0b2 allows authenticated users with permission to create hosts or services to execute arbitrary JavaScript in the browsers of other users performing searches in the Unified Search feature.
Title XSS in Unified Search via Unescaped Host/Service Names
First Time appeared Checkmk
Checkmk checkmk
Weaknesses CWE-79
CPEs cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*
Vendors & Products Checkmk
Checkmk checkmk
References
Metrics cvssV4_0

{'score': 8.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Checkmk

Published:

Updated: 2026-03-31T15:45:36.069Z

Reserved: 2026-03-23T10:47:17.577Z

Link: CVE-2026-33276

cve-icon Vulnrichment

Updated: 2026-03-31T15:45:32.835Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-31T15:16:14.173

Modified: 2026-04-02T12:05:12.983

Link: CVE-2026-33276

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-02T20:22:37Z

Weaknesses