FKIE_CVE-2026-54250
Vulnerability from fkie_nvd - Published: 2026-06-25 19:16 - Updated: 2026-10-25 22:10
Severity
Summary
K3s is a fully conformant production-ready Kubernetes distribution. Prior to 1.35.3+k3s1, 1.34.6+k3s1, v1.33.10+k3s1, a path traversal vulnerability exists in K3s's etcd snapshot decompression functionality. Zip files containing archive members with maliciously crafted names can be written to arbitrary locations on the filesystem when an administrator restores the archive as a compressed etcd snapshot. This vulnerability is fixed in 1.35.3+k3s1, 1.34.6+k3s1, v1.33.10+k3s1.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"product": "k3s",
"vendor": "k3s-io",
"versions": [
{
"status": "affected",
"version": "\u003e= 1.35.0-rc1+k3s1, \u003c 1.35.3+k3s1"
},
{
"status": "affected",
"version": "\u003e= 1.34.0-rc1+k3s1, \u003c 1.34.6+k3s1"
},
{
"status": "affected",
"version": "\u003c 1.33.10+k3s1"
}
]
}
],
"source": "security-advisories@github.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "K3s is a fully conformant production-ready Kubernetes distribution. Prior to 1.35.3+k3s1, 1.34.6+k3s1, v1.33.10+k3s1, a path traversal vulnerability exists in K3s\u0027s etcd snapshot decompression functionality. Zip files containing archive members with maliciously crafted names can be written to arbitrary locations on the filesystem when an administrator restores the archive as a compressed etcd snapshot. This vulnerability is fixed in 1.35.3+k3s1, 1.34.6+k3s1, v1.33.10+k3s1."
},
{
"lang": "es",
"value": "K3s es una distribuci\u00f3n de Kubernetes totalmente conforme y lista para producci\u00f3n. Antes de 1.35.3+k3s1, 1.34.6+k3s1, v1.33.10+k3s1, existe una vulnerabilidad de salto de ruta en la funcionalidad de descompresi\u00f3n de instant\u00e1neas de etcd de K3s. Los archivos Zip que contienen miembros de archivo con nombres creados maliciosamente pueden escribirse en ubicaciones arbitrarias del sistema de archivos cuando un administrador restaura el archivo como una instant\u00e1nea de etcd comprimida. Esta vulnerabilidad est\u00e1 corregida en 1.35.3+k3s1, 1.34.6+k3s1, v1.33.10+k3s1."
}
],
"id": "CVE-2026-54250",
"lastModified": "2026-10-25T22:10:00.150",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 0.6,
"impactScore": 5.2,
"source": "security-advisories@github.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-54250",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-26T17:50:42.464225Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-06-25T19:16:41.983",
"references": [
{
"source": "security-advisories@github.com",
"url": "https://github.com/k3s-io/k3s/security/advisories/GHSA-jxr7-mqhw-9p98"
}
],
"sourceIdentifier": "security-advisories@github.com",
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-22"
}
],
"source": "security-advisories@github.com",
"type": "Secondary"
}
]
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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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.
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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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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.