KubeEdge: keadm DecompressTarGz path traversal enables arbitrary file write on Windows during edge node join
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
KubeEdge is an open source system for extending native containerized application orchestration capabilities to hosts at Edge. From 1.16.0 until 1.21.2, 1.22.2, and 1.23.1, the DecompressTarGz function in keadm/cmd/keadm/app/cmd/util/common.go joins archive entry names to the extraction destination without sufficient validation. During keadm join or installation on Windows edge nodes, an archive influenced through a compromised, replaced, or untrusted download source can contain parent-directory components, Windows-style backslashes, absolute paths, or drive-prefixed paths that escape the intended directory. The affected keadm process can consequently write or overwrite files with its own privileges, potentially modifying configuration, executable, or service files and enabling persistent system modification or code execution. This issue is fixed in versions 1.21.2, 1.22.2, and 1.23.1.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| backstage | kubeedge | 1.16.0 to before 1.21.2; 1.22.0 to before 1.22.2; 1.23.0 to before 1.23.1 | 1.21.2, 1.22.2, 1.23.1 | Patch available | CNA |
| — | github.com/kubeedge/kubeedge (Go) | 1.16.0 to before 1.21.2 | 1.21.2 | Patch available | GHSA-9vm9-pqxx-x83v |
| — | github.com/kubeedge/kubeedge (Go) | 1.22.0 to before 1.22.2 | 1.22.2 | Patch available | GHSA-9vm9-pqxx-x83v |
| — | github.com/kubeedge/kubeedge (Go) | 1.23.0 to before 1.23.1 | 1.23.1 | Patch available | GHSA-9vm9-pqxx-x83v |
- kubeedge Vendorbackstage Affected 1.16.0 to before 1.21.2; 1.22.0 to before 1.22.2; 1.23.0 to before 1.23.1 Fixed in 1.21.2, 1.22.2, 1.23.1 Patch available CNA
- github.com/kubeedge/kubeedge (Go) Vendor— Affected 1.16.0 to before 1.21.2 Fixed in 1.21.2 Patch available GHSA-9vm9-pqxx-x83v
- github.com/kubeedge/kubeedge (Go) Vendor— Affected 1.22.0 to before 1.22.2 Fixed in 1.22.2 Patch available GHSA-9vm9-pqxx-x83v
- github.com/kubeedge/kubeedge (Go) Vendor— Affected 1.23.0 to before 1.23.1 Fixed in 1.23.1 Patch available GHSA-9vm9-pqxx-x83v
Remediation
- Fix · CNA kubeedge (kubeedge) Fixed in 1.21.2, 1.22.2, 1.23.1
- Fix · GHSA-9vm9-pqxx-x83v github.com/kubeedge/kubeedge (Go) Fixed in 1.21.2 Advisory →
- Fix · GHSA-9vm9-pqxx-x83v github.com/kubeedge/kubeedge (Go) Fixed in 1.22.2 Advisory →
- Fix · GHSA-9vm9-pqxx-x83v github.com/kubeedge/kubeedge (Go) Fixed in 1.23.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-62369
- 2026-10-03 Alias added: GHSA-9vm9-pqxx-x83v
- 2026-10-25 EPSS moved to the 50th–90th percentile
References
Other 14
- https://github.com/kubeedge/kubeedge/security/advisories/GHSA-9vm9-pqxx-x83v
- https://github.com/kubeedge/kubeedge/pull/7028
- https://github.com/kubeedge/kubeedge/pull/7029
- https://github.com/kubeedge/kubeedge/pull/7030
- https://github.com/kubeedge/kubeedge/commit/47767b7f2649afcfa3a856e87d556f7777e0428d
- https://github.com/kubeedge/kubeedge/commit/a524a66a1ae1691eb8ff16b6ff9a93fb370d4047
- https://github.com/kubeedge/kubeedge/commit/ee02dea9d08114afc4a8f401b1c2f30e84e1de40
- https://github.com/kubeedge/kubeedge/blob/master/CHANGELOG/CHANGELOG-1.21.md
- https://github.com/kubeedge/kubeedge/blob/master/CHANGELOG/CHANGELOG-1.22.md
- https://github.com/kubeedge/kubeedge/blob/master/CHANGELOG/CHANGELOG-1.23.md
- https://github.com/kubeedge/kubeedge/releases/tag/v1.21.2
- https://github.com/kubeedge/kubeedge/releases/tag/v1.22.2
- https://github.com/kubeedge/kubeedge/releases/tag/v1.23.1
- https://github.com/kubeedge/kubeedge
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Sources
- CVE-2026-62369 · CVE Program
- CVE-2026-62369 · NVD
- FIRST EPSS
- GHSA-9vm9-pqxx-x83v · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences