CVE-2026-15738

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Source
https://cve.org/CVERecord?id=CVE-2026-15738
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-15738.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-15738
Published
2026-07-14T20:19:23Z
Modified
2026-10-28T02:30:34Z
Severity
  • 5.8 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H CVSS Calculator
Summary
Cross-namespace traffic interception via incorrect route precedence ordering in AWS Load Balancer Controller
Details

Incorrect behavior order in the Gateway API listener-rule generation in Amazon AWS Load Balancer Controller before 3.4.2 might allow an authenticated remote user to intercept, spoof, or deny another namespace's gRPC traffic on a shared Gateway via a crafted HTTPRoute resource.

To mitigate this issue, users should upgrade to version 3.4.2.

Database specific 
{
    "cna_assigner":  "AMZN",
    "cwe_ids":  [
        "CWE-653"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/15xxx/CVE-2026-15738.json"
}
References

Affected packages

Git / github.com/kubernetes-sigs/aws-load-balancer-controller

Affected ranges

Type
GIT
Repo
https://github.com/kubernetes-sigs/aws-load-balancer-controller
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
22f6cd7fbfc3f3bdf14bfc41ef780510730b0cfe
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "3.4.2"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandardRange"
        },
        {
            "original_tag":  "v3.4.2",
            "range":  [
                {
                    "fixed":  "22f6cd7fbfc3f3bdf14bfc41ef780510730b0cfe"
                }
            ],
            "source":  "REFERENCES_TAG"
        },
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "3.4.2"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}

Affected versions

v2.*
v2.0.0
v2.0.0-rc0
v2.0.0-rc1
v2.0.0-rc2
v2.0.0-rc3
v2.0.0-rc4
v2.0.0-rc5
v2.0.1
v2.1.0
v2.1.1
v2.1.2
v2.1.3
v2.10.0
v2.11.0
v2.12.0
v2.13.0
v2.13.1
v2.13.2
v2.13.3
v2.13.4
v2.14.0
v2.14.1
v2.15.0
v2.16.0
v2.17.0
v2.2.0
v2.2.1
v2.3.0
v2.3.1
v2.4.0
v2.4.1
v2.4.3
v2.4.4
v2.4.5
v2.4.6
v2.5.0
v2.5.1
v2.5.2
v2.5.3
v2.5.4
v2.6.0
v2.7.0
v2.9.0
v3.*
v3.0.0
v3.1.0
v3.2.0
v3.2.1
v3.2.2
v3.3.0
v3.4.0
v3.4.1
Other
zac-tag
zac-tag-2
zac-v2.*
zac-v2.13.1
znixon/v2.*
znixon/v2.12

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-15738.json"