VulnerabilityAwaiting Analysis

CVE-2026-54250

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.

MEDIUM 5.8EPSS 0.17%

Does this matter?

Lower severity and a low EPSS score (0.17%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 3.1: 5.8 MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:H
EPSS: 0.17% probability · 6th percentile
CISA KEV: Not listed
Weakness: CWE-22
Source: security-advisories@github.com

References

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

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.