CriticalFix available
Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection
Type: advisorySources: OSV
CVE-2026-56855 affects multiple packages. Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection. See references for individual vulnerability details.
- Products
- kube-state-metrics, prometheus-operator
- Affected versions
- Not specified
- Fixed versions
- 0.93.1-r3, 2.17.0-r7, 2.18.0-r10, 2.19.1-r4, 2.20.0-r1
- CVEs
- CVE-2026-56855
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 28 Oct 2026, 09:21 UTC · Revision 1
Source evidence
Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection
core-osv · Original sourcePublished 25 Sept 2026, 00:36 UTC
CVE-2026-56855 affects multiple packages. Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection. See references for individual vulnerability details.
osv:CLEANSTART-2026-CR77142
kube-state-metrics
Fixed versions: 2.19.1-r4
kube-state-metrics
Fixed versions: 2.20.0-r1
prometheus-operator
Fixed versions: 0.93.1-r3
kube-state-metrics
Fixed versions: 2.18.0-r10
kube-state-metrics
Fixed versions: 2.17.0-r7
Complete source record
{
"id": "f2710d74a35cd06b04299cab8ac580582a15815c5b3c0523e827a7f2da9cd9bf",
"url": "https://osv.dev/vulnerability/CLEANSTART-2026-CR77142",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection",
"summary": "CVE-2026-56855 affects multiple packages. Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection. See references for individual vulnerability details.",
"evidence": "osv:CLEANSTART-2026-CR77142",
"products": [
{
"name": {
"value": "kube-state-metrics",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.19.1-r4",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "kube-state-metrics",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.20.0-r1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "prometheus-operator",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.93.1-r3",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "kube-state-metrics",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.18.0-r10",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "kube-state-metrics",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.17.0-r7",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
}
],
"severity": "critical",
"structured": {
"id": "CLEANSTART-2026-CR77142",
"aliases": [
"CLEANSTART-2026-CR77142"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.19.1-r4"
}
]
}
],
"package": {
"name": "kube-state-metrics",
"purl": "pkg:apk/cleanstart/kube-state-metrics",
"ecosystem": "CleanStart"
},
"database_specific": {
"source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-CR77142.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.20.0-r1"
}
]
}
],
"package": {
"name": "kube-state-metrics",
"purl": "pkg:apk/cleanstart/kube-state-metrics",
"ecosystem": "CleanStart"
},
"database_specific": {
"source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-CR77142.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.93.1-r3"
}
]
}
],
"package": {
"name": "prometheus-operator",
"purl": "pkg:apk/cleanstart/prometheus-operator",
"ecosystem": "CleanStart"
},
"database_specific": {
"source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-CR77142.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.18.0-r10"
}
]
}
],
"package": {
"name": "kube-state-metrics",
"purl": "pkg:apk/cleanstart/kube-state-metrics",
"ecosystem": "CleanStart"
},
"database_specific": {
"source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-CR77142.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.17.0-r7"
}
]
}
],
"package": {
"name": "kube-state-metrics",
"purl": "pkg:apk/cleanstart/kube-state-metrics",
"ecosystem": "CleanStart"
},
"database_specific": {
"source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-CR77142.json"
}
}
],
"modified": "2026-10-08T16:46:41.747035704Z",
"provider": "osv",
"upstream": [
"CVE-2026-56855"
],
"references": [
"https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-CR77142.json",
"https://osv.dev/vulnerability/CVE-2026-56855",
"https://nvd.nist.gov/vuln/detail/CVE-2026-56855"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2026-56855",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 101015,
"published_at": "2026-09-25T00:36:58.888+00:00"
}