VulnerabilityAnalyzed
CVE-2026-13322
A flaw was found in KubeVirt's downward metrics virtio-serial server.
LOW 3.8EPSS 0.13%
Does this matter?
Lower severity and a low EPSS score (0.13%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 3.8 LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L
- EPSS
- 0.13% probability · 3th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-770
- Affected
- redhat/openshift virtualization · kubevirt/kubevirt
- Source
- secalert@redhat.com
References
- https://access.redhat.com/security/cve/CVE-2026-13322Mitigation, Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2492681Issue Tracking, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.