CVE-2026-54250

K3s: ZIP Archive Path Traversal Vulnerability in etcd Snapshot Decompression

Published Jun 25, 2026 CVSS 3.1 · 5.8 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-jxr7-mqhw-9p98 K3s: ZIP Archive Path Traversal Vulnerability in etcd Snapshot Decompression
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared K3s
K3s k3s
Vendors & Products K3s
K3s k3s
Type Values Removed Values Added
Description 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.
Title K3s: ZIP Archive Path Traversal Vulnerability in etcd Snapshot Decompression
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 5.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jun 26, 2026, 6:42 PM
Reserved
Jun 12, 2026, 4:25 PM
Status
Awaiting Analysis
Published
Jun 25, 2026, 7:16 PM
Modified
Oct 25, 2026, 10:10 PM