HighFix available
When "Trailer" headers are sent by a client, the HTTP server internally uses the header values to populate the Request
Type: advisorySources: OSV
CVE-2026-78659 affects multiple packages. When "Trailer" headers are sent by a client, the HTTP server internally uses the header values to populate the Request. See references for individual vulnerability details.
- Products
- argo-cd, cert-manager, dex, helm, kubernetes-csi-external-snapshotter, kyverno, opa-fips
- Affected versions
- Not specified
- Fixed versions
- 1.18.2-r4, 1.18.6-r8, 1.21.2-r2, 2.43.1-r7, 3.3.16-r3, 3.4.11-r6, 4.3.1-r1, 8.7.0-r0
- CVEs
- CVE-2026-78659
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 16:53 UTC · Revision 1
Source evidence
When "Trailer" headers are sent by a client, the HTTP server internally uses the header values to populate the Request
core-osv · Original sourcePublished 27 Oct 2026, 00:38 UTC
CVE-2026-78659 affects multiple packages. When "Trailer" headers are sent by a client, the HTTP server internally uses the header values to populate the Request. See references for individual vulnerability details.
osv:CLEANSTART-2026-JH92059
cert-manager
Fixed versions: 1.18.6-r8
helm
Fixed versions: 4.3.1-r1
argo-cd
Fixed versions: 3.3.16-r3
argo-cd
Fixed versions: 3.4.11-r6
kyverno
Fixed versions: 1.18.2-r4
dex
Fixed versions: 2.43.1-r7
opa-fips
Fixed versions: 1.21.2-r2
kubernetes-csi-external-snapshotter
Fixed versions: 8.7.0-r0
Complete source record
{
"id": "d4eb051627cb6658aa5c62ce5aba4c70931d2f8ae6356fdffae0ba6bb781f1dc",
"url": "https://osv.dev/vulnerability/CLEANSTART-2026-JH92059",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "When \"Trailer\" headers are sent by a client, the HTTP server internally uses the header values to populate the Request",
"summary": "CVE-2026-78659 affects multiple packages. When \"Trailer\" headers are sent by a client, the HTTP server internally uses the header values to populate the Request. See references for individual vulnerability details.",
"evidence": "osv:CLEANSTART-2026-JH92059",
"products": [
{
"name": {
"value": "cert-manager",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.18.6-r8",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "helm",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.3.1-r1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "argo-cd",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.3.16-r3",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "argo-cd",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.4.11-r6",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "kyverno",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.18.2-r4",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dex",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.43.1-r7",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "opa-fips",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.21.2-r2",
"evidence": "/affected/6/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "kubernetes-csi-external-snapshotter",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "8.7.0-r0",
"evidence": "/affected/7/ranges"
}
],
"affected_versions": []
}
],
"severity": "high",
"structured": {
"id": "CLEANSTART-2026-JH92059",
"aliases": [
"CLEANSTART-2026-JH92059"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.18.6-r8"
}
]
}
],
"package": {
"name": "cert-manager",
"purl": "pkg:apk/cleanstart/cert-manager",
"ecosystem": "CleanStart"
},
"database_specific": {
"source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-JH92059.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.3.1-r1"
}
]
}
],
"package": {
"name": "helm",
"purl": "pkg:apk/cleanstart/helm",
"ecosystem": "CleanStart"
},
"database_specific": {
"source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-JH92059.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.3.16-r3"
}
]
}
],
"package": {
"name": "argo-cd",
"purl": "pkg:apk/cleanstart/argo-cd",
"ecosystem": "CleanStart"
},
"database_specific": {
"source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-JH92059.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.4.11-r6"
}
]
}
],
"package": {
"name": "argo-cd",
"purl": "pkg:apk/cleanstart/argo-cd",
"ecosystem": "CleanStart"
},
"database_specific": {
"source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-JH92059.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.18.2-r4"
}
]
}
],
"package": {
"name": "kyverno",
"purl": "pkg:apk/cleanstart/kyverno",
"ecosystem": "CleanStart"
},
"database_specific": {
"source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-JH92059.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.43.1-r7"
}
]
}
],
"package": {
"name": "dex",
"purl": "pkg:apk/cleanstart/dex",
"ecosystem": "CleanStart"
},
"database_specific": {
"source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-JH92059.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.21.2-r2"
}
]
}
],
"package": {
"name": "opa-fips",
"purl": "pkg:apk/cleanstart/opa-fips",
"ecosystem": "CleanStart"
},
"database_specific": {
"source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-JH92059.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "8.7.0-r0"
}
]
}
],
"package": {
"name": "kubernetes-csi-external-snapshotter",
"purl": "pkg:apk/cleanstart/kubernetes-csi-external-snapshotter",
"ecosystem": "CleanStart"
},
"database_specific": {
"source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-JH92059.json"
}
}
],
"modified": "2026-10-27T00:45:06.430482528Z",
"provider": "osv",
"upstream": [
"CVE-2026-78659"
],
"references": [
"https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-JH92059.json",
"https://osv.dev/vulnerability/CVE-2026-78659",
"https://nvd.nist.gov/vuln/detail/CVE-2026-78659"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2026-78659",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 459073,
"published_at": "2026-10-27T00:38:41.604126+00:00"
}