GHSA-qcmw-8mm4-4p28: antrea.io/antrea (CVE-2026-34992)

Package	Ecosystem	Affected	Fixed in
antrea.io/antrea	Go	>=1.11.0 \|\| >=2.5.0 \|\| <1.11.0-alpha.0.0.20260225185322-738bad662b20	1.11.0-alpha.0.0.20260225185322-738bad662b20

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Antrea, in dual-stack clusters with IPsec traffic encryption enabled (trafficEncryptionMode: ipsec), does not encrypt inter-Node IPv6 Pod traffic, which is sent in plaintext while IPv4 traffic stays encrypted. The source does not state what an attacker must already have access to to exploit this. Upgrade to Antrea v2.6.0 or later, v2.5.2, or v2.4.5; WireGuard encryption is an alternative, as the source says it is not affected.

Written 7 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.1	High	4.0	CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0013, the 2nd percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 15:06 UTC First seen by agentprime
31 Oct 2026, 15:06 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.