CVE-2026-62370
KubeEdge: Unbounded allocation in viaduct packer enables authenticated remote DoS against CloudHub
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
Description
KubeEdge is an open source system for extending native containerized application orchestration capabilities to hosts at Edge. From 1.0.0 until 1.21.2, 1.22.2, and 1.23.1, Reader.Read in pkg/viaduct/pkg/packer trusts the 32-bit PackageHeader.PayloadLen received through the CloudHub viaduct message-processing path and allocates that amount of memory before validating an upper bound. An authenticated malicious or compromised edge peer can repeatedly send crafted headers with excessive declared lengths, causing memory exhaustion, CloudHub process termination or restart loops, and temporary disruption of cloud-edge communication. This issue does not provide unauthenticated access or direct code execution. This issue is fixed in versions 1.21.2, 1.22.2, and 1.23.1.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Awaiting Analysis | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.50% · top 57% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Weakness
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/kubeedge/kubeedgeGHSA-gfw4-49f9-cp25 (opens in a new tab)
References (13)
- https://github.com/kubeedge/kubeedge/security/advisories/GHSA-gfw4-49f9-cp25 (opens in a new tab)x_refsource_CONFIRM
- https://github.com/kubeedge/kubeedge/pull/7028 (opens in a new tab)x_refsource_MISC
- https://github.com/kubeedge/kubeedge/pull/7029 (opens in a new tab)x_refsource_MISC
- https://github.com/kubeedge/kubeedge/pull/7030 (opens in a new tab)x_refsource_MISC
- https://github.com/kubeedge/kubeedge/commit/0fe1ea18e5d7fde29633286ddf1c7e71cb39606f (opens in a new tab)x_refsource_MISC
- https://github.com/kubeedge/kubeedge/commit/725a73ca35a65d91aa6338e52b8faaab6058f528 (opens in a new tab)x_refsource_MISC
- https://github.com/kubeedge/kubeedge/commit/cc79621943fff9d3f62638d9403ef0cfeda3d0e7 (opens in a new tab)x_refsource_MISC
- https://github.com/kubeedge/kubeedge/blob/master/CHANGELOG/CHANGELOG-1.21.md (opens in a new tab)x_refsource_MISC
- https://github.com/kubeedge/kubeedge/blob/master/CHANGELOG/CHANGELOG-1.22.md (opens in a new tab)x_refsource_MISC
- https://github.com/kubeedge/kubeedge/blob/master/CHANGELOG/CHANGELOG-1.23.md (opens in a new tab)x_refsource_MISC
- https://github.com/kubeedge/kubeedge/releases/tag/v1.21.2 (opens in a new tab)x_refsource_MISC
- https://github.com/kubeedge/kubeedge/releases/tag/v1.22.2 (opens in a new tab)x_refsource_MISC
- https://github.com/kubeedge/kubeedge/releases/tag/v1.23.1 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-gfw4-49f9-cp25 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-62370)Record last updated .