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CVE-2026-33726

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.17.14, 1.18.8, and 1.19.2, Ingress Network Policies are not enforced for traffic from pods to L7 Services (Envoy, GAMMA) with a local backend on the same node, when Per-Endpoint Routing is enabled and BPF Host Routing is disabled. Per-Endpoint Routing is disabled by default, but is automatically enabled in deployments using cloud IPAM, including Cilium ENI on EKS (`eni.enabled`), Alibab
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:7b4035c732a5441552e35ac06d3da8b0cda0d426a7ceb3c2581efde5f0e7231d
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-284","description":"CWE-284: Improper Access Control","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:31318ff0d5e874a9804848503a77509f2d042f8157e58bc31bb53c65ec6126ef · sha256:d794d64464b89f96… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-863","description":"CWE-863: Incorrect Authorization","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:31318ff0d5e874a9804848503a77509f2d042f8157e58bc31bb53c65ec6126ef · sha256:d794d64464b89f96… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"cilium","vendor":"cilium","versions":[{"status":"affected","version":"< 1.17.14"},{"status":"affected","version":">= 1.18.0, < 1.18.8"},{"status":"affected","version":">= 1.19.0, < 1.19.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:31318ff0d5e874a9804848503a77509f2d042f8157e58bc31bb53c65ec6126ef · sha256:d794d64464b89f96… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:31318ff0d5e874a9804848503a77509f2d042f8157e58bc31bb53c65ec6126ef · sha256:d794d64464b89f96… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-284","description":"CWE-284: Improper Access Control","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:31318ff0d5e874a9804848503a77509f2d042f8157e58bc31bb53c65ec6126ef · sha256:d794d64464b89f96… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-863","description":"CWE-863: Incorrect Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:31318ff0d5e874a9804848503a77509f2d042f8157e58bc31bb53c65ec6126ef · sha256:d794d64464b89f96… · /containers/cna/problemTypes/1/descriptions/0

Source references

6 source assertions
{"name":"https://docs.cilium.io/en/stable/network/concepts/routing/#routing","tags":["x_refsource_MISC"],"url":"https://docs.cilium.io/en/stable/network/concepts/routing/#routing"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:31318ff0d5e874a9804848503a77509f2d042f8157e58bc31bb53c65ec6126ef · sha256:d794d64464b89f96… · /containers/cna/references/2
{"name":"https://docs.cilium.io/en/stable/network/kubernetes/policy/#network-policy","tags":["x_refsource_MISC"],"url":"https://docs.cilium.io/en/stable/network/kubernetes/policy/#network-policy"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:31318ff0d5e874a9804848503a77509f2d042f8157e58bc31bb53c65ec6126ef · sha256:d794d64464b89f96… · /containers/cna/references/3
{"name":"https://docs.cilium.io/en/stable/network/servicemesh/l7-traffic-management","tags":["x_refsource_MISC"],"url":"https://docs.cilium.io/en/stable/network/servicemesh/l7-traffic-management"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:31318ff0d5e874a9804848503a77509f2d042f8157e58bc31bb53c65ec6126ef · sha256:d794d64464b89f96… · /containers/cna/references/4
{"name":"https://docs.cilium.io/en/stable/operations/performance/tuning/#ebpf-host-routing","tags":["x_refsource_MISC"],"url":"https://docs.cilium.io/en/stable/operations/performance/tuning/#ebpf-host-routing"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:31318ff0d5e874a9804848503a77509f2d042f8157e58bc31bb53c65ec6126ef · sha256:d794d64464b89f96… · /containers/cna/references/5
{"name":"https://github.com/cilium/cilium/pull/44693","tags":["x_refsource_MISC"],"url":"https://github.com/cilium/cilium/pull/44693"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:31318ff0d5e874a9804848503a77509f2d042f8157e58bc31bb53c65ec6126ef · sha256:d794d64464b89f96… · /containers/cna/references/1
{"name":"https://github.com/cilium/cilium/security/advisories/GHSA-hxv8-4j4r-cqgv","tags":["x_refsource_CONFIRM"],"url":"https://github.com/cilium/cilium/security/advisories/GHSA-hxv8-4j4r-cqgv"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:31318ff0d5e874a9804848503a77509f2d042f8157e58bc31bb53c65ec6126ef · sha256:d794d64464b89f96… · /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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