CVE-2026-3466 (GCVE-0-2026-3466)
Vulnerability from cvelistv5
Published
2026-04-07 12:08
Modified
2026-04-08 08:17
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Summary
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 2.5.0b3 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.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Checkmk GmbH | Checkmk |
Version: 2.2.0 ≤ Version: 2.3.0 ≤ Version: 2.4.0 ≤ Version: 2.5.0b1 ≤ |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-3466",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-04-07T13:18:39.707466Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-04-07T13:18:48.034Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Checkmk",
"vendor": "Checkmk GmbH",
"versions": [
{
"status": "affected",
"version": "2.2.0",
"versionType": "semver"
},
{
"lessThan": "2.3.0p46",
"status": "affected",
"version": "2.3.0",
"versionType": "semver"
},
{
"lessThan": "2.4.0p25",
"status": "affected",
"version": "2.4.0",
"versionType": "semver"
},
{
"lessThan": "2.5.0b3",
"status": "affected",
"version": "2.5.0b1",
"versionType": "semver"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:*:*:*:*:*:*:*",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*",
"versionEndExcluding": "2.3.0p46",
"versionStartIncluding": "2.3.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*",
"versionEndExcluding": "2.4.0p25",
"versionStartIncluding": "2.4.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*",
"versionEndExcluding": "2.5.0b3",
"versionStartIncluding": "2.5.0b1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "Alex Williams (Pellera Technologies)"
}
],
"descriptions": [
{
"lang": "en",
"value": "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 2.5.0b3 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."
}
],
"impacts": [
{
"capecId": "CAPEC-592",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-592: Stored XSS"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"baseScore": 8.5,
"baseSeverity": "HIGH",
"vectorString": "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",
"version": "4.0"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-04-08T08:17:54.013Z",
"orgId": "f7d6281c-4801-44ce-ace2-493291dedb0f",
"shortName": "Checkmk"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://checkmk.com/werk/19033"
},
{
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/checkmk-stored-cross-site-scripting-in-dashlet-title"
}
],
"title": "Cross-site scripting in dashlet title",
"x_generator": {
"engine": "cvelib 1.8.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "f7d6281c-4801-44ce-ace2-493291dedb0f",
"assignerShortName": "Checkmk",
"cveId": "CVE-2026-3466",
"datePublished": "2026-04-07T12:08:50.132Z",
"dateReserved": "2026-03-03T09:09:01.487Z",
"dateUpdated": "2026-04-08T08:17:54.013Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-3466\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-04-07T13:18:39.707466Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-04-07T13:18:44.039Z\"}}], \"cna\": {\"title\": \"Cross-site scripting in dashlet title\", \"credits\": [{\"lang\": \"en\", \"type\": \"reporter\", \"value\": \"Alex Williams (Pellera Technologies)\"}], \"impacts\": [{\"capecId\": \"CAPEC-592\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-592: Stored XSS\"}]}], \"metrics\": [{\"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 8.5, \"baseSeverity\": \"HIGH\", \"vectorString\": \"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\": [{\"vendor\": \"Checkmk GmbH\", \"product\": \"Checkmk\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.2.0\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"2.3.0\", \"lessThan\": \"2.3.0p46\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"2.4.0\", \"lessThan\": \"2.4.0p25\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"2.5.0b1\", \"lessThan\": \"2.5.0b3\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://checkmk.com/werk/19033\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://www.vulncheck.com/advisories/checkmk-stored-cross-site-scripting-in-dashlet-title\", \"tags\": [\"third-party-advisory\"]}], \"x_generator\": {\"engine\": \"cvelib 1.8.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"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 2.5.0b3 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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-79\", \"description\": \"CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:checkmk:checkmk:2.2.0:*:*:*:*:*:*:*\", \"vulnerable\": true}, {\"criteria\": \"cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"2.3.0p46\", \"versionStartIncluding\": \"2.3.0\"}, {\"criteria\": \"cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"2.4.0p25\", \"versionStartIncluding\": \"2.4.0\"}, {\"criteria\": \"cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"2.5.0b3\", \"versionStartIncluding\": \"2.5.0b1\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"f7d6281c-4801-44ce-ace2-493291dedb0f\", \"shortName\": \"Checkmk\", \"dateUpdated\": \"2026-04-08T08:17:54.013Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-3466\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-04-08T08:17:54.013Z\", \"dateReserved\": \"2026-03-03T09:09:01.487Z\", \"assignerOrgId\": \"f7d6281c-4801-44ce-ace2-493291dedb0f\", \"datePublished\": \"2026-04-07T12:08:50.132Z\", \"assignerShortName\": \"Checkmk\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…