CVE-2026-18677

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Source
https://cve.org/CVERecord?id=CVE-2026-18677
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-18677.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-18677
Aliases
  • GHSA-744g-c785-x65q
Published
2026-08-12T18:47:06.710Z
Modified
2026-08-15T11:31:01.458342683Z
Severity
  • 6.0 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Kong Mesh: a dataplane token without a workload binding can claim any workload's SPIFFE identity
Details

In Kong Mesh running in universal mode with a MeshIdentity whose SPIFFE ID path template derives from the dataplane's kuma.io/workload label, the XDS authenticator in kuma-cp validates that label only when the dataplane token is bound to a workload. Workload binding is optional, so a dataplane presenting a tags-bound token can register with kuma.io/workload set to any value and obtain another workload's SPIFFE identity.

Database specific 
{
    "cwe_ids": [
        "CWE-290"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/18xxx/CVE-2026-18677.json",
    "cna_assigner": "Kong"
}
References

Affected packages

Git / github.com/kumahq/kuma

Affected ranges

Type
GIT
Repo
https://github.com/kumahq/kuma
Events
Introduced
99bb946e09bcdf7f7e6c1275c8bf14206db77274
Fixed
b9b8c3f84ad8ff5fede09577439eb12cac518709
Introduced
51c6d3819be75d9587942242cdec709bc9934321
Fixed
a82706b54052df26826f33a8421145572689e6b5
Database specific
Show details 
{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "2.13.0"
        },
        {
            "fixed": "2.13.10"
        },
        {
            "introduced": "2.14.0"
        },
        {
            "fixed": "2.14.2"
        }
    ]
}

Affected versions

v2.*
v2.13.0
v2.13.1
v2.13.2
v2.13.3
v2.13.4
v2.13.5
v2.13.6
v2.13.7
v2.13.8
v2.13.9
v2.14.0
v2.14.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-18677.json"