{"id":"EUVD-2026-57423","enisaUuid":"7dc65a0b-bfe2-3239-b310-51b64cf0d259","description":"The default kuma-cp configuration in Kong Mesh reveals the admin bootstrap token and signing keys to any webpage the operator visits while the control plane is reachable from their browser. Due to a CORS misconfiguration a cross-origin fetch() from a malicious page returns the admin JWT and signing material.","datePublished":"Aug 12, 2026, 6:42:38 PM","dateUpdated":"Aug 13, 2026, 2:50:43 PM","baseScore":5.1,"baseScoreVersion":"4.0","baseScoreVector":"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","references":"https://github.com/kumahq/kuma/security/advisories/GHSA-3vcp-chfh-f6r2\nhttps://github.com/kumahq/kuma/pull/16416\nhttps://github.com/kumahq/kuma/pull/16423\nhttps://github.com/kumahq/kuma/pull/16424\nhttps://github.com/kumahq/kuma/pull/16425\nhttps://github.com/kumahq/kuma/pull/16426\nhttps://github.com/kumahq/kuma/pull/16427\nhttps://developer.konghq.com/mesh/changelog/\n","aliases":"CVE-2026-18676\nGHSA-x23j-4pcq-m26j\n","assigner":"Kong","epss":0.3,"enisaIdProduct":[{"id":"0fa02a48-6f8a-37a5-86e6-ce4f3b472c6e","product":{"name":"Kong Mesh","vendor":{"name":"Kong Inc."}},"product_version":"2.13.0 \u003c2.13.5"},{"id":"125debbd-fe8d-32fb-a2d5-d4df8bc71548","product":{"name":"Kong Mesh","vendor":{"name":"Kong Inc."}},"product_version":"2.10.0 \u003c2.11.13"},{"id":"8252e9f9-2773-330a-a117-56b60c223beb","product":{"name":"Kong Mesh","vendor":{"name":"Kong Inc."}},"product_version":"0 \u003c2.7.25"},{"id":"9560b403-7a26-3a8c-a3bb-7b6b57413a3f","product":{"name":"Kong Mesh","vendor":{"name":"Kong Inc."}},"product_version":"2.12.0 \u003c2.12.10"},{"id":"dab8cac5-2522-3924-8e38-f604c698c441","product":{"name":"Kong Mesh","vendor":{"name":"Kong Inc."}},"product_version":"2.8.0 \u003c2.9.15"}],"enisaIdVendor":[{"id":"81791461-20bc-3bb9-b423-afb723a3d4bd","vendor":{"name":"Kong Inc."}}],"enisaIdVulnerability":[{"id":"28f647f3-b405-31a8-8794-068f2173817a","vulnerability":{"id":"CVE-2026-18676","description":"The default kuma-cp configuration in Kong Mesh reveals the admin bootstrap token and signing keys to any webpage the operator visits while the control plane is reachable from their browser. Due to a CORS misconfiguration a cross-origin fetch() from a malicious page returns the admin JWT and signing material.","datePublished":"Aug 12, 2026, 6:42:38 PM","dateUpdated":"Aug 13, 2026, 2:50:43 PM","status":"PUBLISHED","baseScore":5.1,"baseScoreVersion":"4.0","baseScoreVector":"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","references":"https://github.com/kumahq/kuma/security/advisories/GHSA-3vcp-chfh-f6r2\nhttps://github.com/kumahq/kuma/pull/16416\nhttps://github.com/kumahq/kuma/pull/16423\nhttps://github.com/kumahq/kuma/pull/16424\nhttps://github.com/kumahq/kuma/pull/16425\nhttps://github.com/kumahq/kuma/pull/16426\nhttps://github.com/kumahq/kuma/pull/16427\nhttps://developer.konghq.com/mesh/changelog/\n","enisa_id":"EUVD-2026-57423\n","assigner":"Kong","epss":0.3,"dataProcessed":"Nov 2, 2026, 7:21:09 AM","vulnerabilityProduct":[{"id":"3116fdcf-1fe6-3932-ba87-a09f67106a17","product":{"name":"Kong Mesh","vendor":{"name":"Kong Inc."}},"product_version":"2.10.0 \u003c2.11.13"},{"id":"57cb1368-413e-3075-a474-6dfead061da3","product":{"name":"Kong Mesh","vendor":{"name":"Kong Inc."}},"product_version":"2.13.0 \u003c2.13.5"},{"id":"748f6f5e-bfbe-3745-b3c3-d6b7c58adf6c","product":{"name":"Kong Mesh","vendor":{"name":"Kong Inc."}},"product_version":"2.12.0 \u003c2.12.10"},{"id":"caa43316-54f6-32e0-bf14-d4376086240d","product":{"name":"Kong Mesh","vendor":{"name":"Kong Inc."}},"product_version":"0 \u003c2.7.25"},{"id":"ed7a7ba2-823d-3305-a4a7-405300fdd345","product":{"name":"Kong Mesh","vendor":{"name":"Kong Inc."}},"product_version":"2.8.0 \u003c2.9.15"}],"vulnerabilityVendor":[{"id":"e843226b-bbd1-3460-bc50-b381191d676b","vendor":{"name":"Kong Inc."}}]}},{"id":"def299a1-8b76-3536-a20a-b7d6121a0942","vulnerability":{"id":"GHSA-x23j-4pcq-m26j","description":"The default kuma-cp configuration in Kong Mesh reveals the admin bootstrap token and signing keys to any webpage the operator visits while the control plane is reachable from their browser. Due to a CORS misconfiguration a cross-origin fetch() from a malicious page returns the admin JWT and signing material.","datePublished":"Aug 12, 2026, 9:31:37 PM","dateUpdated":"Aug 12, 2026, 9:31:37 PM","baseScore":0.0,"references":"https://github.com/kumahq/kuma/security/advisories/GHSA-3vcp-chfh-f6r2\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-18676\nhttps://github.com/kumahq/kuma/pull/16416\nhttps://github.com/kumahq/kuma/pull/16423\nhttps://github.com/kumahq/kuma/pull/16424\nhttps://github.com/kumahq/kuma/pull/16425\nhttps://github.com/kumahq/kuma/pull/16426\nhttps://github.com/kumahq/kuma/pull/16427\nhttps://developer.konghq.com/mesh/changelog\n","enisa_id":"EUVD-2026-57423\n","aliases":"GHSA-x23j-4pcq-m26j\nCVE-2026-18676\n","epss":0.0,"dataProcessed":"Nov 1, 2026, 2:03:49 AM","vulnerabilityProduct":[],"vulnerabilityVendor":[]}}],"enisaIdAdvisory":[]}