Vulnerability details
CVE-2026-7186
Checkmk Checkmk
Fix stored XSS in URL dashboard widget via dangerous URI schemes
CVSS 4.0
8.5High
Official description
Stored cross-site scripting in the URL dashboard widget in Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, and all 2.2.0 versions allows a user with dashboard editing permissions to store a URL with a dangerous URI scheme such as javascript: that executes scripts in other users' browsers when they view the dashboard.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.5High | 4.0 | CVEProject cvelistV5 (CNA) (Checkmk) | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Checkmk GmbH | Checkmk | 2.2.0 | CVEProject cvelistV5 (CNA) |
| Checkmk GmbH | Checkmk | 2.3.0 ≤ v < 2.3.0p48 | CVEProject cvelistV5 (CNA) |
| Checkmk GmbH | Checkmk | 2.4.0 ≤ v < 2.4.0p31 | CVEProject cvelistV5 (CNA) |
| Checkmk GmbH | Checkmk | 2.5.0 ≤ v < 2.5.0p5 | CVEProject cvelistV5 (CNA) |
References and advisories
1- https://checkmk.com/werk/17991 vendor-advisory
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Details
- Published
- 2026-06-08
- Last updated
- 2026-06-08
- State
- Published
- Assigner (CNA)
- Checkmk
Exploit prediction (EPSS)
0.13%
Probability of exploitation in 30 days
3%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')