CVE-2026-32254

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Source
https://cve.org/CVERecord?id=CVE-2026-32254
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-32254.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-32254
Aliases
Downstream
Related
Published
2026-03-18T03:14:39.392Z
Modified
2026-07-08T08:06:23.936110511Z
Severity
  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H CVSS Calculator
Summary
Kube-router Proxy Module Blindly Trusts ExternalIPs/LoadBalancer IPs Enabling Cluster-Wide Traffic Hijacking and DNS DoS
Details

Kube-router is a turnkey solution for Kubernetes networking. Prior to version 2.8.0, Kube-router's proxy module does not validate externalIPs or loadBalancer IPs before programming them into the node's network configuration. Version 2.8.0 contains a patch for the issue. Available workarounds include enabling DenyServiceExternalIPs feature gate, deploying admission policy, restricting service creation RBAC, monitoring service changes, and applying BGP prefix filtering.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32254.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-284"
    ]
}
References

Affected packages

Git / github.com/cloudnativelabs/kube-router

Affected ranges

Type
GIT
Repo
https://github.com/cloudnativelabs/kube-router
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
0e94d43d4010c2d057c3e1f17c555600dde9fe7f
Fixed
a1f0b2eea3ee0f66b9a5b5c49dcb714619ccd456
Database specific 
{
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ],
    "cpe": "cpe:2.3:a:kube-router:kube-router:*:*:*:*:*:kubernetes:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.8.0"
        }
    ]
}

Affected versions

0.*
0.0.2
0.0.3
0.0.4
v0.*
v0.0.10
v0.0.11
v0.0.12
v0.0.13
v0.0.14
v0.0.15
v0.0.16
v0.0.17
v0.0.18
v0.0.19
v0.0.20
v0.0.5
v0.0.6
v0.0.7
v0.0.8
v0.0.9
v0.1.0
v0.1.0-rc1
v0.1.0-rc2
v0.2.0
v0.2.0-beta.1
v0.2.0-beta.10
v0.2.0-beta.2
v0.2.0-beta.3
v0.2.0-beta.4
v0.2.0-beta.5
v0.2.0-beta.6
v0.2.0-beta.7
v0.2.0-beta.8
v0.2.0-beta.9
v0.2.1
v0.2.2
v0.2.3
v0.2.4
v0.2.5
v0.3.0
v0.3.1
v0.3.2
v0.4.0
v0.4.0-rc1
v0.4.0-rc2
v0.4.0-rc3
v1.*
v1.0.0
v1.0.0-rc1
v1.0.0-rc2
v1.0.0-rc3
v1.0.0-rc4
v1.0.0-rc5
v1.0.0-rc6
v1.1.0
v1.1.0-rc1
v1.1.1
v1.2.0
v1.2.1
v1.3.0-rc1
v1.3.0-rc2
v1.3.0-rc6
v1.3.1
v1.4.0
v1.5.0
v1.6.0
v2.*
v2.0.0
v2.1.0
v2.1.1
v2.2.0
v2.3.0
v2.4.0
v2.5.0
v2.6.0
v2.7.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-32254.json"