CVE-2026-34992 Missing Encryption of Sensitive Data in antrea.io/antrea
Attackers can read sensitive IPv6 Pod traffic in plaintext in dual-stack Antrea clusters with IPsec enabled due to missing encryption.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-34992?
CVE-2026-34992 is a high-severity vulnerability in antrea-io antrea, published on 6 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-311
Which versions are affected by CVE-2026-34992?
9 open source packages ship an affected version, including antrea.io/antrea. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
antrea.io/antrea Go | All versions | None |
antrea.io/antrea Go | All versions | 1.11.0-alpha.0.0.20260225185322-738bad662b20 |
antrea.io/antrea Go | All versions | 1.11.0-alpha.0.0.20260225185322-738bad662b20 |
antrea.io/antrea Go | All versions | 1.11.0-alpha.0.0.20260225185322-738bad662b20 |
antrea.io/antrea Go | From 1.11.0 | None |
antrea.io/antrea Go | From 1.11.0 | None |
3 more packages
antrea.io/antrea Go | From 1.11.0 | None |
antrea.io/antrea Go | From 2.5.0 | None |
antrea.io/antrea Go | From 2.5.0 | None |
Products include Linuxfoundation Antrea.
How do I fix CVE-2026-34992?
Upgrade antrea.io/antrea to 1.11.0-alpha.0.0.20260225185322-738bad662b20 or later.
Is CVE-2026-34992 being exploited?
There is no known exploitation of CVE-2026-34992 in the wild and no public exploit code.
Other vulnerabilities in antrea-io antrea
Sources
Also known as GHSA-qcmw-8mm4-4p28, GO-2026-5579.