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CVE-2026-4342

A security issue was discovered in ingress-nginx where a combination of Ingress annotations can be used to inject configuration into nginx. This can lead to arbitrary code execution in the context of the ingress-nginx controller, and disclosure of Secrets accessible to the controller. (Note that in the default installation, the controller can access all Secrets cluster-wide.)
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:9cda9af0134e5ead14bf0a35d776af3a6b9ac792ab14fd6a624ef7ed24f1c4cf
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"affected","product":"ingress-nginx","repo":"https://github.com/kubernetes/ingress-nginx","vendor":"Kubernetes","versions":[{"lessThan":"1.13.9","status":"affected","version":"0","versionType":"semver"},{"lessThan":"1.14.5","status":"affected","version":"0","versionType":"semver"},{"lessThan":"1.15.1","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a9298a1a60ae46b22ef7f0c154d94036740ff93675ee11638d0238235035daab · sha256:b3d6b5bc0ac65c92… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a9298a1a60ae46b22ef7f0c154d94036740ff93675ee11638d0238235035daab · sha256:b3d6b5bc0ac65c92… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-20","description":"CWE-20 Improper Input Validation","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a9298a1a60ae46b22ef7f0c154d94036740ff93675ee11638d0238235035daab · sha256:b3d6b5bc0ac65c92… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"url":"http://www.openwall.com/lists/oss-security/2026/03/19/9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a9298a1a60ae46b22ef7f0c154d94036740ff93675ee11638d0238235035daab · sha256:b3d6b5bc0ac65c92… · /containers/adp/0/references/0
{"url":"https://github.com/kubernetes/kubernetes/issues/137893"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a9298a1a60ae46b22ef7f0c154d94036740ff93675ee11638d0238235035daab · sha256:b3d6b5bc0ac65c92… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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