PT-2026-52538 · K3S Io · K3S

Published 2026-06-25 · Updated 2026-06-25 · CVE-2026-54250

Mitre

CVSS v3.1

5.8

Medium

Base vector

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

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.

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2026-54250

Affected Products

K3S

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-54250 · Security Note
• https://github.com/k3s-io/k3s/security/advisories/GHSA-jxr7-mqhw-9p98 · Note