(CVE-2026-97031)
Vulnerability from cleanstart – Published: 2026-10-30 10:57 – Updated: 2026-10-12 07:59 – Source website
VLAI
Summary
Multiple ECH outer extension references are not permitted under RFC 9849; previously, a client could send a well-crafted packet that could trigger memory exhaustion in the server process by specify...
Details
CVE-2026-97031 affects multiple packages. Multiple ECH outer extension references are not permitted under RFC 9849; previously, a client could send a well-crafted packet that could trigger memory exhaustion in the server process by specifying multiple references. See references for individual vulnerability details.
Severity
7.5 (High)
References
{
"affected": [
{
"package": {
"ecosystem": "CleanStart",
"name": "stakater-reloader",
"purl": "pkg:apk/cleanstart/stakater-reloader"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.1.0-r6"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "stakater-reloader",
"purl": "pkg:apk/cleanstart/stakater-reloader"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.1.0-r7"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "kube-state-metrics",
"purl": "pkg:apk/cleanstart/kube-state-metrics"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.20.0-r4"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "gomplate",
"purl": "pkg:apk/cleanstart/gomplate"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.3.3-r5"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "loki",
"purl": "pkg:apk/cleanstart/loki?arch=x86_64"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.5.12-r6"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "loki",
"purl": "pkg:apk/cleanstart/loki?arch=aarch64"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.5.12-r6"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "loki",
"purl": "pkg:apk/cleanstart/loki?arch=ppc64le"
},
"ranges": [
{
"events": [
{
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},
{
"fixed": "3.5.12-r6"
}
],
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}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "loki",
"purl": "pkg:apk/cleanstart/loki?arch=loongarch64"
},
"ranges": [
{
"events": [
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{
"fixed": "3.5.12-r6"
}
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}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "opa-fips",
"purl": "pkg:apk/cleanstart/opa-fips"
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{
"fixed": "1.21.2-r0"
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]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "istio-pilot-discovery",
"purl": "pkg:apk/cleanstart/istio-pilot-discovery"
},
"ranges": [
{
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{
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{
"fixed": "1.30.5-r0"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
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"name": "kedacore-http-add-on",
"purl": "pkg:apk/cleanstart/kedacore-http-add-on"
},
"ranges": [
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"introduced": "0"
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{
"fixed": "0.15.0-r1"
}
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}
]
},
{
"package": {
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"name": "kedacore-http-add-on",
"purl": "pkg:apk/cleanstart/kedacore-http-add-on"
},
"ranges": [
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"introduced": "0"
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{
"fixed": "0.13.0-r0"
}
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"type": "ECOSYSTEM"
}
]
},
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"purl": "pkg:apk/cleanstart/rclone"
},
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"events": [
{
"introduced": "0"
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{
"fixed": "1.71.2-r5"
}
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]
},
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"purl": "pkg:apk/cleanstart/knative-serving?arch=x86_64"
},
"ranges": [
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"introduced": "0"
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{
"fixed": "1.22.1-r8"
}
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]
},
{
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"name": "knative-serving",
"purl": "pkg:apk/cleanstart/knative-serving?arch=aarch64"
},
"ranges": [
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"fixed": "1.22.1-r8"
}
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]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "knative-serving",
"purl": "pkg:apk/cleanstart/knative-serving?arch=x86_64"
},
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"fixed": "1.23.0-r3"
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},
{
"package": {
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"name": "knative-serving",
"purl": "pkg:apk/cleanstart/knative-serving?arch=aarch64"
},
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"package": {
"ecosystem": "CleanStart",
"name": "haproxy-ingress",
"purl": "pkg:apk/cleanstart/haproxy-ingress"
},
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"fixed": "0.15.4-r9"
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{
"package": {
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"name": "prometheus-mysqld-exporter",
"purl": "pkg:apk/cleanstart/prometheus-mysqld-exporter"
},
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},
{
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"purl": "pkg:apk/cleanstart/prometheus-mysqld-exporter"
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"purl": "pkg:apk/cleanstart/prometheus"
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]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "keda",
"purl": "pkg:apk/cleanstart/keda"
},
"ranges": [
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"fixed": "2.20.2-r4"
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]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "yunikorn-k8shim",
"purl": "pkg:apk/cleanstart/yunikorn-k8shim"
},
"ranges": [
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{
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{
"package": {
"ecosystem": "CleanStart",
"name": "keda",
"purl": "pkg:apk/cleanstart/keda"
},
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"fixed": "2.17.2-r3"
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{
"package": {
"ecosystem": "CleanStart",
"name": "prometheus-operator",
"purl": "pkg:apk/cleanstart/prometheus-operator"
},
"ranges": [
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},
{
"package": {
"ecosystem": "CleanStart",
"name": "renovate",
"purl": "pkg:apk/cleanstart/renovate"
},
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{
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"purl": "pkg:apk/cleanstart/prometheus-mysqld-exporter"
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"purl": "pkg:apk/cleanstart/prometheus-statsd-exporter"
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"purl": "pkg:apk/cleanstart/istio-pilot-discovery"
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{
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"purl": "pkg:apk/cleanstart/nfs-subdir-external-provisioner"
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{
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],
"credits": [],
"database_specific": {},
"details": "CVE-2026-97031 affects multiple packages. Multiple ECH outer extension references are not permitted under RFC 9849; previously, a client could send a well-crafted packet that could trigger memory exhaustion in the server process by specifying multiple references. See references for individual vulnerability details.",
"id": "CLEANSTART-2026-IR06102",
"modified": "2026-10-12T07:59:03Z",
"published": "2026-10-30T10:57:00.008763Z",
"references": [
{
"type": "ADVISORY",
"url": "https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-IR06102.json"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-97031"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97031"
}
],
"related": [],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "Multiple ECH outer extension references are not permitted under RFC 9849; previously, a client could send a well-crafted packet that could trigger memory exhaustion in the server process by specify...",
"upstream": [
"CVE-2026-97031"
]
}
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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