CVE-2026-54250
K3s: ZIP Archive Path Traversal Vulnerability in etcd Snapshot Decompression
CVSS Score
5.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-22 |
| Vendor | k3s-io |
| Product | k3s |
| Published | Jun 25, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High
Affected Versions
k3s-io / k3s
>= 1.35.0-rc1+k3s1, < 1.35.3+k3s1 >= 1.34.0-rc1+k3s1, < 1.34.6+k3s1 < 1.33.10+k3s1