CVE-2026-34992

Antrea is a Kubernetes networking solution intended to be Kubernetes native. Prior to 2.4.5 and 2.5.2, a missing encryption vulnerability affects inter-Node Pod traffic. In Antrea clusters configured for dual-stack networking with IPsec encryption enabled (trafficEncryptionMode: ipsec), Antrea fails to apply encryption for IPv6 Pod traffic. While the IPv4 traffic is correctly encrypted via ESP (Encapsulating Security Payload), traffic using IPv6 is transmitted in plaintext. This occurs because the packets are encapsulated (using Geneve or VXLAN) but bypass the IPsec encryption layer. Impacted Users: users with dual-stack clusters and IPsec encryption enabled. Single-stack IPv4 or IPv6 clusters are not affected. This vulnerability is fixed in 2.4.5 and 2.5.2.

The following products are affected by CVE-2026-34992 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-34992.

URL	Resource
https://github.com/antrea-io/antrea/blob/main/docs/traffic-encryption.md
https://github.com/antrea-io/antrea/commit/738bad662b20a5d358d19466936176ef580a9b07
https://github.com/antrea-io/antrea/pull/7757
https://github.com/antrea-io/antrea/pull/7759
https://github.com/antrea-io/antrea/security/advisories/GHSA-qcmw-8mm4-4p28