(CVE-2026-97031)
Vulnerability from cleanstart – Published: 2026-10-15 00:42 – Updated: 2026-10-14 06:00 – 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": "ollama-fips",
"purl": "pkg:apk/cleanstart/ollama-fips?arch=x86_64"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.40.3-r1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "ollama-fips",
"purl": "pkg:apk/cleanstart/ollama-fips?arch=aarch64"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.40.3-r1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "prometheus-statsd-exporter",
"purl": "pkg:apk/cleanstart/prometheus-statsd-exporter"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.31.0-r2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "argo-rollouts-fips",
"purl": "pkg:apk/cleanstart/argo-rollouts-fips"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.10.1-r1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "temporal-server-fips",
"purl": "pkg:apk/cleanstart/temporal-server-fips"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.31.4-r1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "prometheus-statsd-exporter",
"purl": "pkg:apk/cleanstart/prometheus-statsd-exporter"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.30.0-r3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "stakater-reloader",
"purl": "pkg:apk/cleanstart/stakater-reloader"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.4.17-r1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "prometheus-statsd-exporter",
"purl": "pkg:apk/cleanstart/prometheus-statsd-exporter"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.28.0-r6"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "prometheus-statsd-exporter",
"purl": "pkg:apk/cleanstart/prometheus-statsd-exporter"
},
"ranges": [
{
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{
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},
{
"fixed": "0.29.0-r5"
}
],
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}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "istio-pilot-discovery",
"purl": "pkg:apk/cleanstart/istio-pilot-discovery"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.31.1-r2"
}
],
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}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "prometheus-node-exporter-fips",
"purl": "pkg:apk/cleanstart/prometheus-node-exporter-fips"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.10.2-r5"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "prometheus-operator",
"purl": "pkg:apk/cleanstart/prometheus-operator"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.93.1-r4"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "prometheus-mysqld-exporter",
"purl": "pkg:apk/cleanstart/prometheus-mysqld-exporter"
},
"ranges": [
{
"events": [
{
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{
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}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "prometheus-operator",
"purl": "pkg:apk/cleanstart/prometheus-operator"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.91.0-r11"
}
],
"type": "ECOSYSTEM"
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]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "prometheus-operator",
"purl": "pkg:apk/cleanstart/prometheus-operator"
},
"ranges": [
{
"events": [
{
"introduced": "0"
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{
"fixed": "0.92.1-r7"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "prometheus-mysqld-exporter",
"purl": "pkg:apk/cleanstart/prometheus-mysqld-exporter"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.17.2-r11"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "prometheus-mysqld-exporter",
"purl": "pkg:apk/cleanstart/prometheus-mysqld-exporter"
},
"ranges": [
{
"events": [
{
"introduced": "0"
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{
"fixed": "0.18.0-r9"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
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"name": "prometheus-mysqld-exporter",
"purl": "pkg:apk/cleanstart/prometheus-mysqld-exporter"
},
"ranges": [
{
"events": [
{
"introduced": "0"
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{
"fixed": "0.19.0-r8"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "istio-pilot-discovery",
"purl": "pkg:apk/cleanstart/istio-pilot-discovery"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.30.5-r1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "istio-pilot-discovery",
"purl": "pkg:apk/cleanstart/istio-pilot-discovery"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.29.8-r1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "istio-pilot-discovery",
"purl": "pkg:apk/cleanstart/istio-pilot-discovery"
},
"ranges": [
{
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{
"introduced": "0"
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{
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}
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"type": "ECOSYSTEM"
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]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "stakater-reloader",
"purl": "pkg:apk/cleanstart/stakater-reloader"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.1.0-r8"
}
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]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "stakater-reloader",
"purl": "pkg:apk/cleanstart/stakater-reloader"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.3.0-r7"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "wait-for-port",
"purl": "pkg:apk/cleanstart/wait-for-port"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.0.10-r7"
}
],
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}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "loki",
"purl": "pkg:apk/cleanstart/loki?arch=x86_64"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
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],
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}
]
},
{
"package": {
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"name": "loki",
"purl": "pkg:apk/cleanstart/loki?arch=aarch64"
},
"ranges": [
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{
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{
"package": {
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"purl": "pkg:apk/cleanstart/loki?arch=loongarch64"
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{
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"name": "prometheus",
"purl": "pkg:apk/cleanstart/prometheus"
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{
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{
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{
"package": {
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"purl": "pkg:apk/cleanstart/loki?arch=x86_64"
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{
"package": {
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"name": "loki",
"purl": "pkg:apk/cleanstart/loki?arch=aarch64"
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{
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{
"package": {
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"name": "loki",
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{
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]
},
{
"package": {
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"name": "openbao",
"purl": "pkg:apk/cleanstart/openbao"
},
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]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "mongodb",
"purl": "pkg:apk/cleanstart/mongodb?arch=x86_64"
},
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{
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},
{
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}
],
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}
]
},
{
"package": {
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"name": "mongodb",
"purl": "pkg:apk/cleanstart/mongodb?arch=aarch64"
},
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{
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{
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}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "mongodb",
"purl": "pkg:apk/cleanstart/mongodb?arch=x86_64"
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}
]
},
{
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{
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"purl": "pkg:apk/cleanstart/trust-manager"
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]
},
{
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{
"package": {
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}
]
},
{
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"purl": "pkg:apk/cleanstart/opentelemetry-collector-contrib"
},
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{
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{
"introduced": "0"
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{
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}
],
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}
]
},
{
"package": {
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"name": "external-dns",
"purl": "pkg:apk/cleanstart/external-dns"
},
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{
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{
"introduced": "0"
},
{
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}
],
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}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "opentelemetry-collector-contrib",
"purl": "pkg:apk/cleanstart/opentelemetry-collector-contrib"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.159.0-r4"
}
],
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}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "external-dns",
"purl": "pkg:apk/cleanstart/external-dns"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.20.0-r3"
}
],
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}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "external-dns",
"purl": "pkg:apk/cleanstart/external-dns"
},
"ranges": [
{
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{
"introduced": "0"
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{
"fixed": "0.21.0-r5"
}
],
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}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "nfs-subdir-external-provisioner",
"purl": "pkg:apk/cleanstart/nfs-subdir-external-provisioner"
},
"ranges": [
{
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{
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},
{
"fixed": "4.0.18-r3"
}
],
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}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "mongodb",
"purl": "pkg:apk/cleanstart/mongodb?arch=x86_64"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "8.1.3-r5"
}
],
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}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "mongodb",
"purl": "pkg:apk/cleanstart/mongodb?arch=aarch64"
},
"ranges": [
{
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{
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{
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],
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}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "mongodb",
"purl": "pkg:apk/cleanstart/mongodb?arch=x86_64"
},
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{
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{
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{
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]
},
{
"package": {
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],
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]
},
{
"package": {
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"name": "kube-state-metrics",
"purl": "pkg:apk/cleanstart/kube-state-metrics"
},
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{
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]
},
{
"package": {
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"purl": "pkg:apk/cleanstart/kube-state-metrics"
},
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{
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{
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],
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]
},
{
"package": {
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"name": "kube-state-metrics",
"purl": "pkg:apk/cleanstart/kube-state-metrics"
},
"ranges": [
{
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{
"introduced": "0"
},
{
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}
],
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}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "grafana-alloy",
"purl": "pkg:apk/cleanstart/grafana-alloy"
},
"ranges": [
{
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{
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},
{
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}
],
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}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "kube-state-metrics",
"purl": "pkg:apk/cleanstart/kube-state-metrics"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.17.0-r10"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "grafana-alloy",
"purl": "pkg:apk/cleanstart/grafana-alloy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.18.1-r2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "CleanStart",
"name": "prometheus-alertmanager",
"purl": "pkg:apk/cleanstart/prometheus-alertmanager"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.34.1-r2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"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-XH32812",
"modified": "2026-10-14T06:00:32Z",
"published": "2026-10-15T00:42:35.426513Z",
"references": [
{
"type": "ADVISORY",
"url": "https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-XH32812.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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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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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
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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.
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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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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