CVE-2026-13322
Low · 3.8CVSS
3.8
EPSS
0.1%
Published
Jun 26, 2026
CISA due date
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The record
A flaw was found in KubeVirt's downward metrics virtio-serial server. The server reads guest requests using textproto.Reader.ReadLine(), which buffers input indefinitely until a newline character is received, with no length limit or read deadline. A user with access to a VM guest that has the downward metrics virtio-serial device configured can write a continuous byte stream to the device, causing unbounded memory allocation in the virt-handler process until it is OOM-killed.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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