CVE-2026-54250

medium

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.

References

https://github.com/k3s-io/k3s/security/advisories/GHSA-jxr7-mqhw-9p98

Details

Source: Mitre, NVD

Published: 2026-06-25

Updated: 2026-06-26

Risk Information

CVSS v2

Base Score: 5.9

Vector: CVSS2#AV:L/AC:L/Au:M/C:N/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 5.8

Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:H

Severity: Medium

EPSS

EPSS: 0.00013