Improper Traffic Filtering

github.com/containernetworking/plugins is vulnerable to improper traffic filtering. The vulnerability is due to incorrect handling of destination IP when using the nftables backend, which allows an attacker to intercept unintended traffic destined for the same host port across containers...

CVE-2025-67499

A flaw was found in the CNI Container Network Interface portmap plugin. This vulnerability allows containers to intercept all traffic destined for a host port via inadvertent forwarding of traffic with the same destination port when the plugin is configured with the nftables backend, ignoring the...

CVE-2025-67499

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...