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CVE-2026-45021

Kuma is a modern Envoy-based service mesh that can run on every cloud across both Kubernetes and VMs. Prior to 2.7.25, 2.9.15, 2.11.13, 2.12.10, and 2.13.5, the default kuma-cp config leaks the admin bootstrap token and signing keys to any webpage the operator visits while the control plane is reachable from their browser. CorsAllowedDomains: [".*"] reflects any Origin, and LocalhostIsAdmin: true promotes requests from 127.0.0.1 to mesh-system:admin. A cross-origin fetch() from a malicious page
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:4294edbfac6d45f91d4fab795f9c52566ede9486f2c18f8db9c7529c0c6c1181
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-942","description":"CWE-942: Permissive Cross-domain Policy with Untrusted Domains","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2166383152177fc4c10bce942e28e848e4ce6bab5e43e696966b8a8f21491296 · sha256:a623c2d046b91376… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-346","description":"CWE-346: Origin Validation Error","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2166383152177fc4c10bce942e28e848e4ce6bab5e43e696966b8a8f21491296 · sha256:a623c2d046b91376… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"kuma","vendor":"kumahq","versions":[{"status":"affected","version":"< 2.7.25"},{"status":"affected","version":">= 2.9.0, < 2.9.15"},{"status":"affected","version":">= 2.11.0, < 2.11.13"},{"status":"affected","version":">= 2.12.0, < 2.12.10"},{"status":"affected","version":">= 2.13.0, < 2.13.5"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2166383152177fc4c10bce942e28e848e4ce6bab5e43e696966b8a8f21491296 · sha256:a623c2d046b91376… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.1,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"ACTIVE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2166383152177fc4c10bce942e28e848e4ce6bab5e43e696966b8a8f21491296 · sha256:a623c2d046b91376… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-942","description":"CWE-942: Permissive Cross-domain Policy with Untrusted Domains","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2166383152177fc4c10bce942e28e848e4ce6bab5e43e696966b8a8f21491296 · sha256:a623c2d046b91376… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-346","description":"CWE-346: Origin Validation Error","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2166383152177fc4c10bce942e28e848e4ce6bab5e43e696966b8a8f21491296 · sha256:a623c2d046b91376… · /containers/cna/problemTypes/0/descriptions/0

Source references

8 source assertions
{"name":"https://github.com/kumahq/kuma/commit/8fefa8595d44eb68d922405702ed7a0826322907","tags":["x_refsource_MISC"],"url":"https://github.com/kumahq/kuma/commit/8fefa8595d44eb68d922405702ed7a0826322907"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2166383152177fc4c10bce942e28e848e4ce6bab5e43e696966b8a8f21491296 · sha256:a623c2d046b91376… · /containers/cna/references/7
{"name":"https://github.com/kumahq/kuma/pull/16416","tags":["x_refsource_MISC"],"url":"https://github.com/kumahq/kuma/pull/16416"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2166383152177fc4c10bce942e28e848e4ce6bab5e43e696966b8a8f21491296 · sha256:a623c2d046b91376… · /containers/cna/references/1
{"name":"https://github.com/kumahq/kuma/pull/16423","tags":["x_refsource_MISC"],"url":"https://github.com/kumahq/kuma/pull/16423"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2166383152177fc4c10bce942e28e848e4ce6bab5e43e696966b8a8f21491296 · sha256:a623c2d046b91376… · /containers/cna/references/2
{"name":"https://github.com/kumahq/kuma/pull/16424","tags":["x_refsource_MISC"],"url":"https://github.com/kumahq/kuma/pull/16424"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2166383152177fc4c10bce942e28e848e4ce6bab5e43e696966b8a8f21491296 · sha256:a623c2d046b91376… · /containers/cna/references/3
{"name":"https://github.com/kumahq/kuma/pull/16425","tags":["x_refsource_MISC"],"url":"https://github.com/kumahq/kuma/pull/16425"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2166383152177fc4c10bce942e28e848e4ce6bab5e43e696966b8a8f21491296 · sha256:a623c2d046b91376… · /containers/cna/references/4
{"name":"https://github.com/kumahq/kuma/pull/16426","tags":["x_refsource_MISC"],"url":"https://github.com/kumahq/kuma/pull/16426"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2166383152177fc4c10bce942e28e848e4ce6bab5e43e696966b8a8f21491296 · sha256:a623c2d046b91376… · /containers/cna/references/5
{"name":"https://github.com/kumahq/kuma/pull/16427","tags":["x_refsource_MISC"],"url":"https://github.com/kumahq/kuma/pull/16427"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2166383152177fc4c10bce942e28e848e4ce6bab5e43e696966b8a8f21491296 · sha256:a623c2d046b91376… · /containers/cna/references/6
{"name":"https://github.com/kumahq/kuma/security/advisories/GHSA-3vcp-chfh-f6r2","tags":["x_refsource_CONFIRM"],"url":"https://github.com/kumahq/kuma/security/advisories/GHSA-3vcp-chfh-f6r2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2166383152177fc4c10bce942e28e848e4ce6bab5e43e696966b8a8f21491296 · sha256:a623c2d046b91376… · /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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