CVE-2026-33276 — MEDIUM (5.4)

Vulnerability 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.

CVSS Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Checkmk	Checkmk	2.5.0

Related Weaknesses (CWE)

CWE-79

References

https://checkmk.com/werk/19525Vendor Advisory

FAQ

What is CVE-2026-33276?

CVE-2026-33276 is a vulnerability with a CVSS score of 5.4 (MEDIUM). 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...

How severe is CVE-2026-33276?

CVE-2026-33276 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-33276?

Check the references section above for vendor advisories and patch information. Affected products include: Checkmk Checkmk.