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TI-2026-27213 Aliases CVE-2026-34992GHSA-qcmw-8mm4-4p28

Missing Encryption of Sensitive Data in antrea.io/antrea

Priority LOW 30CWE-311Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-311.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00127 2nd percentileScored 2026-11-07
Fix Fixed antrea (antrea-io): 2.4.5, 2.5.2antrea.io/antrea (Go): 1.11.0-alpha.0.0.20260225185322-738bad662b20

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
antrea-ioantreabefore 2.4.5; 2.5.0 to before 2.5.22.4.5, 2.5.2Patch availableCNA
—antrea.io/antrea (Go)1.11.0 and later—No fix listedGHSA-qcmw-8mm4-4p28
—antrea.io/antrea (Go)2.5.0 and later—No fix listedGHSA-qcmw-8mm4-4p28
—antrea.io/antrea (Go)before 1.11.0-alpha.0.0.20260225185322-738bad662b201.11.0-alpha.0.0.20260225185322-738bad662b20Patch availableGHSA-qcmw-8mm4-4p28
  • antrea Vendorantrea-io Affected before 2.4.5; 2.5.0 to before 2.5.2 Fixed in 2.4.5, 2.5.2 Patch available CNA
  • antrea.io/antrea (Go) Vendor— Affected 1.11.0 and later Fixed in — No fix listed GHSA-qcmw-8mm4-4p28
  • antrea.io/antrea (Go) Vendor— Affected 2.5.0 and later Fixed in — No fix listed GHSA-qcmw-8mm4-4p28
  • antrea.io/antrea (Go) Vendor— Affected before 1.11.0-alpha.0.0.20260225185322-738bad662b20 Fixed in 1.11.0-alpha.0.0.20260225185322-738bad662b20 Patch available GHSA-qcmw-8mm4-4p28

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:linuxfoundation:antrea:*:*:*:*:*:kubernetes:*:*before 2.4.5; 2.5.0 to before 2.5.2Vulnerablebackstage
  • cpe:2.3:a:linuxfoundation:antrea:*:*:*:*:*:kubernetes:*:* Versions before 2.4.5; 2.5.0 to before 2.5.2 Vulnerable ·backstage

Remediation

  • Fix · CNA antrea (antrea-io) Fixed in 2.4.5, 2.5.2
  • Fix · GHSA-qcmw-8mm4-4p28 antrea.io/antrea (Go) Fixed in 1.11.0-alpha.0.0.20260225185322-738bad662b20 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-34992
  2. 2026-10-03 Alias added: GHSA-qcmw-8mm4-4p28

References

Patch 5

Advisory 1

Other 1

  • TI-2026-20867 Antrea has invalid enforcement order for network policy rules caused by integer overflow CVSS 4.0HIGH 8.0

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences