{"id":"CVE-2026-18674","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-18674","generatedAt":"2026-10-27T23:10:20.899Z","title":"The result is a cross-zone isolation bypass: the holder of a single enrolled zone's credential can inject, attribute, and overwrite resources in another zone's namespace mesh-wide.","description":"On a Kong Mesh global control plane, resources received over the zone-to-global KDS sync are attributed using the in-band, sender-controlled ControlPlane.Identifier rather than the authenticated zone identity derived from the connection. Authenticated zones can have the global control plane store and re-distribute those resources as belonging to another zone.\n\n\n\nThe result is a cross-zone isolation bypass: the holder of a single enrolled zone's credential can inject, attribute, and overwrite resources in another zone's namespace mesh-wide.\n\n\n\n\nThe root cause lives in Kuma's open-source KDS sync code, which Kong Mesh's control plane is built on.","published":"2026-08-17T13:16:52.000Z","lastModified":"2026-08-31T19:22:43.000Z","status":"Awaiting Analysis","sourceIdentifier":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb","cvss":{"version":"4.0","score":7,"severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-345","CWE-863"],"affected":[],"epss":{"score":0.00558,"percentile":0.46226,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.56%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://developer.konghq.com/mesh/changelog/","source":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb"},{"url":"https://github.com/kumahq/kuma/pull/17456","source":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb"},{"url":"https://github.com/kumahq/kuma/pull/17458","source":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb"},{"url":"https://github.com/kumahq/kuma/pull/17459","source":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb"},{"url":"https://github.com/kumahq/kuma/pull/17460","source":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb"},{"url":"https://github.com/kumahq/kuma/pull/17461","source":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb"},{"url":"https://github.com/kumahq/kuma/pull/17462","source":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb"},{"url":"https://github.com/kumahq/kuma/pull/17463","source":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb"},{"url":"https://github.com/kumahq/kuma/security/advisories/GHSA-m58j-fjmc-h3g4","source":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-18674","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}