Cross-site scripting in dashlet title
Summary
| CVE | CVE-2026-3466 |
|---|---|
| State | PUBLISHED |
| Assigner | Checkmk |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-04-07 13:16:47 UTC |
| Updated | 2026-04-22 13:16:20 UTC |
| Description | Insufficient sanitization of dashboard dashlet title links in Checkmk 2.2.0 (EOL), Checkmk 2.3.0 before 2.3.0p46, Checkmk 2.4.0 before 2.4.0p25, and Checkmk 2.5.0 (beta) before 2.5.0 allows an attacker with dashboard creation privileges to perform stored cross-site scripting (XSS) attacks by tricking a victim into clicking a crafted dashlet title link on a shared dashboard. |
Risk And Classification
Primary CVSS: v4.0 8.5 HIGH from [email protected]
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS: 0.000300000 probability, percentile 0.087320000 (date 2026-04-22)
Problem Types: CWE-79 | CWE-79 CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | [email protected] | Secondary | 8.5 | HIGH | 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/E:X/C... |
| 4.0 | CNA | DECLARED | 8.5 | HIGH | 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 |
| 3.1 | [email protected] | Primary | 5.4 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
CVSS v4.0 Breakdown
Attack Vector
NetworkAttack Complexity
LowAttack Requirements
NonePrivileges Required
LowUser Interaction
ActiveConfidentiality
HighIntegrity
HighAvailability
HighSub Conf.
NoneSub Integrity
LowSub Availability
NoneCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
LowUser Interaction
RequiredScope
ChangedConfidentiality
LowIntegrity
LowAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Checkmk | Checkmk | 2.2.0 | - | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | b1 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | b2 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | b3 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | b4 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | b5 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | b6 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | b7 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | b8 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | i1 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p1 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p10 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p11 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p12 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p13 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p14 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p15 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p16 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p17 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p18 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p19 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p2 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p20 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p21 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p22 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p23 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p24 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p25 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p26 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p27 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p28 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p29 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p3 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p30 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p31 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p32 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p33 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p34 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p35 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p36 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p37 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p38 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p39 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p4 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p40 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p41 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p42 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p43 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p44 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p45 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p46 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p47 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p5 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p6 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p7 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p8 | All | All |
| Application | Checkmk | Checkmk | 2.2.0 | p9 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | - | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | b1 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | b2 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | b3 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | b4 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | b5 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | b6 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p1 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p10 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p11 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p12 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p13 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p14 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p15 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p16 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p17 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p18 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p19 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p2 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p20 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p21 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p22 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p23 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p24 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p25 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p26 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p27 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p28 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p29 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p3 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p30 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p31 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p32 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p33 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p34 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p35 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p36 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p37 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p38 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p39 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p4 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p40 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p41 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p42 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p43 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p44 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p45 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p5 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p6 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p7 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p8 | All | All |
| Application | Checkmk | Checkmk | 2.3.0 | p9 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | - | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | b1 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | b2 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | b3 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | b4 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | b5 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | b6 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p1 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p10 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p11 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p12 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p13 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p14 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p15 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p16 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p17 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p18 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p19 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p2 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p20 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p21 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p22 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p23 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p24 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p3 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p4 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p5 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p6 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p7 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p8 | All | All |
| Application | Checkmk | Checkmk | 2.4.0 | p9 | All | All |
| Application | Checkmk | Checkmk | 2.5.0 | b1 | All | All |
| Application | Checkmk | Checkmk | 2.5.0 | b2 | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Checkmk GmbH | Checkmk | affected 2.2.0 semver | Not specified |
| CNA | Checkmk GmbH | Checkmk | affected 2.3.0 2.3.0p46 semver | Not specified |
| CNA | Checkmk GmbH | Checkmk | affected 2.4.0 2.4.0p25 semver | Not specified |
| CNA | Checkmk GmbH | Checkmk | affected 2.5.0b1 2.5.0 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| checkmk.com/werk/19583 | [email protected] | checkmk.com | |
| checkmk.com/werk/19033 | [email protected] | checkmk.com | Vendor Advisory |
| www.vulncheck.com/advisories/checkmk-stored-cross-site-scripting-in-dashlet-title | [email protected] | www.vulncheck.com | Release Notes, Third Party Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Alex Williams (Pellera Technologies) (en)
There are currently no legacy QID mappings associated with this CVE.