TI-2025-41256 Aliases CVE-2025-67499 GHSA-jv3w-x3r3-g6rm

CNI Plugins Portmap nftables backend intercepts non-local traffic

LOW 28CWE-200Published 2025-12-09 · Updated 2025-12-10

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Information disclosure
Confidentiality · integrity · availability: Low · Low · High
Fix status: Partial Red Hat: 4 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-200.

Summary

The CNI portmap plugin allows containers to emulate opening a host port, forwarding that traffic to the container. Versions 1.6.0 through 1.8.0 inadvertently forward all traffic with the same destination port as the host port when the portmap plugin is configured with the nftables backend, thus ignoring the destination IP. This includes traffic not intended for the node itself, i.e. traffic to containers hosted on the node. Containers that request HostPort forwarding can intercept all traffic destined for that port. This requires that the portmap plugin be explicitly configured to use the nftables backend. This issue is fixed in version 1.9.0. To workaround, configure the portmap plugin to use the iptables backend. It does not have this vulnerability.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00139 3rd percentileScored 2026-11-07

Fix Partial plugins (containernetworking): 1.9.0github.com/containernetworking/plugins (Go): 1.9.0Red Hat: 4 without a fix

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

Vendor	Product	Affected versions	Fixed in	Status	Source
containernetworking	plugins	1.6.0 to before 1.9.0	1.9.0	Patch available	CNA
—	github.com/containernetworking/plugins (Go)	1.6.0 to before 1.9.0	1.9.0	Patch available	GHSA-jv3w-x3r3-g6rm

plugins Vendorcontainernetworking Affected 1.6.0 to before 1.9.0 Fixed in 1.9.0 Patch available CNA
github.com/containernetworking/plugins (Go) Vendor— Affected 1.6.0 to before 1.9.0 Fixed in 1.9.0 Patch available GHSA-jv3w-x3r3-g6rm

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:linuxfoundation:cni_network_plugins::::::::	1.6.0 to before 1.9.0	Vulnerable	backstage

cpe:2.3:a:linuxfoundation:cni_network_plugins:*:*:*:*:*:*:*:* Versions 1.6.0 to before 1.9.0 Vulnerable ·backstage

Remediation

Fix · CNA plugins (containernetworking) Fixed in 1.9.0
Fix · GHSA-jv3w-x3r3-g6rm github.com/containernetworking/plugins (Go) Fixed in 1.9.0 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux 8	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 9	Affected	No fix yet: Fix deferred
Red Hat OpenShift Container Platform 4	Affected	No fix yet: Fix deferred
Red Hat OpenShift Virtualization 4	Affected	No fix yet: Fix deferred

Timeline

2026-10-02 Threatist record created from CVE-2025-67499
2026-10-03 Alias added: GHSA-jv3w-x3r3-g6rm

References

Patch 1

https://github.com/containernetworking/plugins/pull/1210

Advisory 2

Other 4

TI-2020-08646 A vulnerability was found in all versions of containernetworking/plugins before version… CVSS 3.1MEDIUM 6.0

Sources

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