{"id":"EM-20261103-2XJ2","url":"https://cyber.eventmonitor.net/incident/EM-20261103-2XJ2/","type":"cve","title":"Eclipse Vert.x Vulnerability (CVE-2026-118489)","subtitle":"CVE-2026-118489","subject":"CVE-2026-118489","status":"Developing","severity":"high","affected":[],"headline":null,"born":"2026-11-03T15:17:24.780Z","firstSignal":"2026-11-03T14:55:48.000Z","lastSignal":"2026-11-03T15:17:24.780Z","updated":"2026-11-04T14:43:58.877Z","revision":1,"life":[{"status":"Born","at":"2026-11-03T15:17:24.780Z","why":"second independent source: C6 NVD CVE API 2.0"},{"status":"Developing","at":"2026-11-03T15:17:24.780Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-03T14:55:48.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-03T15:17:24.780Z","what":"Born: second source, C6 NVD CVE API 2.0. Page EM-20261103-2XJ2 created."}],"stages":[{"name":"Disclosed","at":"2026-11-03T15:17:24.780Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-03T15:17:24.780Z","detail":"CVSS 7.5 · EPSS 0.3%"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-03T14:55:48.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-03T14:55:48.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":3,"title":"Red Hat: CVE-2026-118489 (important)","text":"io.vertx/vertx-web-client: vertx-web-client: Information disclosure via shared web client cache","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-118489.json"},{"at":"2026-11-03T15:17:24.780Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":3,"title":"CVE-2026-118489 (CVSS 7.5)","text":"In Eclipse Vert.x versions [4.0.0,4.5.35] or [5.0.0,5.2.2], when one `CachingWebClient` is shared across users — the documented pattern of a per-user `WebClientSession` over a shared caching client — a response that is specific to one user but is cacheable and not marked `private`/`no-store` is stored in the client-level shared cache tier and served to other users requesting the same URL. A later user's session, or an anonymous caller through the same client, can receive an earlier user's response. Depending on the response this discloses authenticated content or a session cookie, the latter e","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-118489"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-03T15:17:24.780","score":7.5,"severity":"HIGH","desc":"In Eclipse Vert.x versions [4.0.0,4.5.35] or [5.0.0,5.2.2], when one `CachingWebClient` is shared across users — the documented pattern of a per-user `WebClientSession` over a shared caching client — a response that is specific to one user but is cacheable and not marked `private`/`no-store` is stor","product":"","seen":1793803438877},"kev":null,"epss":{"epss":0.00342,"pct":0.27858,"at":1793803438877},"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}