CVE-2026-16543

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Source
https://cve.org/CVERecord?id=CVE-2026-16543
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-16543.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-16543
Aliases
  • GHSA-h4fh-j7xg-vwcx
Published
2026-07-29T15:29:03.485Z
Modified
2026-08-12T03:51:32.549303173Z
Severity
  • 7.1 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Kong Operator cluster-wide ingress configuration DoS via embedded KIC CA-certificate ID collision
Details

Kong Operator's embedded Kong Kubernetes Ingress Controller (KIC) allows a user with namespace-scoped Secret creation privileges to cause a cluster-wide ingress configuration denial of service. The embedded KIC collects CA-certificate Secrets across all watched namespaces using a label selector alone, without ingress-class or namespace restrictions. The CA-certificate primary key is derived from a user-supplied field in the Secret. Duplicate CA-certificate IDs cause Kong Gateway to reject the entire configuration document and halting all ingress changes cluster-wide.

Database specific 
{
    "cna_assigner": "Kong",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/16xxx/CVE-2026-16543.json",
    "cwe_ids": [
        "CWE-400",
        "CWE-862"
    ]
}
References

Affected packages

Git / github.com/kong/kong-operator

Affected ranges

Type
GIT
Repo
https://github.com/kong/kong-operator
Events
Introduced
c35ea3121973cb1346b15ddd11178262a7b81e24
Fixed
c82c010a8b0ecd9153defc970ae2496295fa4efc
Introduced
11e82af4d5467ac1316b70f4ba58989ac7061bbf
Fixed
7c8eb4da2b861184d991afd810d02fdb44958551
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
08a60fecd564fdc9cba3e445768139708d103ec9
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "2.2.0"
        },
        {
            "fixed": "2.2.3"
        },
        {
            "introduced": "2.1.0"
        },
        {
            "fixed": "2.1.9"
        },
        {
            "introduced": "0"
        },
        {
            "fixed": "2.0.11"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

v0.*
v0.0.1
v0.0.2
v0.0.3
v0.0.4
v0.0.5
v0.1.0
v0.1.1
v0.2.0
v0.3.0
v0.4.0
v0.5.0
v0.6.0
v0.7.0
v1.*
v1.0.0
v1.0.0-rc.0
v1.0.1
v1.0.2
v1.0.3
v1.1.0
v1.2.0
v1.2.0-alpha.1
v1.2.0-alpha.2
v1.2.0-rc.1
v1.2.0-rc.2
v1.2.0-rc.3
v1.2.1
v1.3.0
v1.3.0-rc.1
v1.3.0-rc.2
v1.4.0
v1.4.0-rc.0
v1.4.0-rc.1
v1.5.0
v1.6.0
v2.*
v2.0.0
v2.0.0-alpha.1
v2.0.0-alpha.2
v2.0.0-alpha.3
v2.0.0-alpha.4
v2.0.0-alpha.5
v2.0.1
v2.0.10
v2.0.2
v2.0.3
v2.0.4
v2.0.5
v2.0.6
v2.0.7
v2.0.8
v2.0.9
v2.1.0
v2.1.1
v2.1.2
v2.1.3
v2.1.4
v2.1.5
v2.1.6
v2.1.7
v2.1.8
v2.2.0
v2.2.1
v2.2.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-16543.json"