CVE-2025-67499: Github.com/containernetworking/plugins Remote Code Execution Vulnerability
MODERATECVE-2025-67499 is a MODERATE (CVSS 6.6) remote code execution vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting Github.com/containernetworking/plugins libraries in the Go ecosystem. The issue involves cna plugins portmap nftables backend can intercept non-local traffic. Remediation is available by upgrading affected packages to version 1.9.0.
CVE-2025-67499 at a Glance
Security Impact
CVSS: 6.6
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H).
How to Fix CVE-2025-67499
To remediate this vulnerability, upgrade all affected Github.com/containernetworking/plugins dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade github.com/containernetworking/plugins to 1.9.0Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for github.com/containernetworking/pluginsHow to Check if You Are Affected
To determine whether your application is affected by CVE-2025-67499, inspect your project dependencies for Github.com/containernetworking/plugins:
inspect dependencies for github.com/containernetworking/pluginsAnalyze the terminal output to locate any version of Github.com/containernetworking/plugins in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.9.0), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor, where the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. In Github.com/containernetworking/plugins, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2025-67499 Affected Github.com/containernetworking/plugins Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
github.com/containernetworking/plugins
|
Go |
≥ 1.6.0
< 1.9.0
|
1.9.0
|
References
Frequently Asked Questions
What is CVE-2025-67499?
Which Github.com/containernetworking/plugins versions are affected?
What version fixes CVE-2025-67499?
Is github.com/containernetworking/plugins affected?
What is the CVSS score of CVE-2025-67499?
What CWE is associated with CVE-2025-67499?
How can I check Go dependencies for CVE-2025-67499?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-jv3w-x3r3-g6rm",
"modified" : "2026-03-24T21:05:28Z",
"published" : "2025-12-09T17:18:59Z",
"aliases" : [ "CVE-2025-67499" ],
"summary" : "CNA Plugins Portmap nftables backend can intercept non-local traffic",
"details" : "### Background\n\nThe CNI `portmap` plugin allows containers to emulate opening a host port, forwarding that traffic to the container. For example, if a host has the IP 198.51.100.42, a container may request that all packets to `198.51.100.42:53` be forwarded to the container's network.\n\n### Vulnerability\n\nWhen the `portmap` plugin is configured with the `nftables` backend, it inadvertently forwards all traffic with the same destination port as the host port, **ignoring the destination IP**. This includes traffic not intended for the node itself, i.e. traffic to containers hosted on the node.\n\nIn the given example above, traffic destined to port 53 but for a _separate container_ would still be captured and forwarded, even though it was not destined for the host.\n\n### Impact\n\nContainers (i.e. kubernetes pods) 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. (The `iptables` backend is the default.)\n\n### Patches\nThis is fixed as of CNI plugins v1.9.0\n\n### Workarounds\nConfigure the `portmap` plugin to use the `iptables` backend. It does not have this vulnerability.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/containernetworking/plugins"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "1.6.0"
}, {
"fixed" : "1.9.0"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/containernetworking/plugins/security/advisories/GHSA-jv3w-x3r3-g6rm"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-67499"
}, {
"type" : "WEB",
"url" : "https://github.com/containernetworking/plugins/pull/1210"
}, {
"type" : "WEB",
"url" : "https://github.com/containernetworking/plugins/commit/9b3772e1a7abf93cbb7c6526a28bc0d27b830e02"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/containernetworking/plugins"
}, {
"type" : "WEB",
"url" : "https://github.com/containernetworking/plugins/releases/tag/v1.9.0"
}, {
"type" : "WEB",
"url" : "https://pkg.go.dev/vuln/GO-2026-4222"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-200" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2025-12-09T17:18:59Z",
"nvd_published_at" : "2025-12-10T00:16:11Z"
}
}