VULNERABILITY INTELLIGENCE

CVE-2026-13322

CVSS score3.8 LOW
EPSS probability0.13%
CISA KEVNot currently listed
Published2026-06-26
Last modified2026-10-25
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L

Description

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.

Weakness classification

  • CWE-770: Allocation of Resources Without Limits or Throttling

Primary references