{"id":"CVE-2026-18674","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-18674","summary":"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…","details":"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":"2026-08-17T13:16:51.820","modified":"2026-08-17T13:16:51.820","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/kumahq/kuma/pull/17456","label":"kumahq/kuma#17456"},"references":[{"type":"WEB","url":"https://developer.konghq.com/mesh/changelog/"},{"type":"WEB","url":"https://github.com/kumahq/kuma/pull/17456"},{"type":"WEB","url":"https://github.com/kumahq/kuma/pull/17458"},{"type":"WEB","url":"https://github.com/kumahq/kuma/pull/17459"},{"type":"WEB","url":"https://github.com/kumahq/kuma/pull/17460"},{"type":"WEB","url":"https://github.com/kumahq/kuma/pull/17461"},{"type":"WEB","url":"https://github.com/kumahq/kuma/pull/17462"},{"type":"WEB","url":"https://github.com/kumahq/kuma/pull/17463"},{"type":"WEB","url":"https://github.com/kumahq/kuma/security/advisories/GHSA-m58j-fjmc-h3g4"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-17T13:16:51.820"}}