CVE-2026-54250GHSA-JXR7-MQHW-9P98GO-2026-5973
K3s: ZIP Archive Path Traversal Vulnerability in etcd Snapshot Decompression
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 1.35.3+k3s1, 1.34.6+k3s1, 1.33.10+k3s1, 1.35.3, 1.34.6, and 1 more
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- k3s-io k3s
From 1.35.0-rc1+k3s1 · fixed in 1.35.3+k3s1; From 1.34.0-rc1+k3s1 · fixed in 1.34.6+k3s1; fixed in 1.33.10+k3s1
- github.com/k3s-io/k3sGo
From 1.35.0-rc1 · fixed in 1.35.3
- github.com/k3s-io/k3sGo
From 1.34.0-rc1 · fixed in 1.34.6
- github.com/k3s-io/k3sGo
fixed in 1.33.10
- github.com/k3s-io/k3sGo
All versions