{"id":"EM-20261030-732E","url":"https://cyber.eventmonitor.net/incident/EM-20261030-732E/","type":"cve","title":"Ring Vulnerability (CVE-2026-62864)","subtitle":"CVE-2026-62864","subject":"CVE-2026-62864","status":"Developing","severity":"high","affected":[],"headline":null,"born":"2026-10-30T21:17:14.693Z","firstSignal":"2026-10-30T20:34:42.000Z","lastSignal":"2026-10-30T21:17:14.693Z","updated":"2026-11-04T14:43:58.877Z","revision":1,"life":[{"status":"Born","at":"2026-10-30T21:17:14.693Z","why":"second independent source: C6 NVD CVE API 2.0"},{"status":"Developing","at":"2026-10-30T21:17:14.693Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-10-30T20:34:42.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-10-30T21:17:14.693Z","what":"Born: second source, C6 NVD CVE API 2.0. Page EM-20261030-732E created."}],"stages":[{"name":"Disclosed","at":"2026-10-30T21:17:14.693Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-10-30T21:17:14.693Z","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":"2026-10-30T20:34:42.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-10-30T20:34:42.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":3,"title":"Red Hat: CVE-2026-62864 (important)","text":"ring/ring-core: Ring: Denial of Service via regular expression backtracking in wrap-nested-params","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-62864.json"},{"at":"2026-10-30T21:17:14.693Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":3,"title":"CVE-2026-62864 (CVSS 7.5)","text":"Ring is a Clojure web applications library inspired by Python's WSGI and Ruby's Rack. Prior to 1.15.5, `wrap-nested-params` in the `ring.middleware.nested-params` namespace uses a backtracking regular expression to match parameter names from URL query strings and HTTP request bodies. An attacker can craft a parameter name that drives quadratic O(n^2) matching work, causing regular-expression denial of service in applications using the middleware. `Ring-Defaults` users are also exposed because nested-params is enabled by default. Applications omitting the middleware do not expose this parsing p","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-62864"}],"crowd":[],"reference":{"nvd":{"published":"2026-10-30T21:17:14.693","score":7.5,"severity":"HIGH","desc":"Ring is a Clojure web applications library inspired by Python's WSGI and Ruby's Rack. Prior to 1.15.5, `wrap-nested-params` in the `ring.middleware.nested-params` namespace uses a backtracking regular expression to match parameter names from URL query strings and HTTP request bodies. An attacker can","product":"","seen":1793803438877},"kev":null,"epss":{"epss":0.00339,"pct":0.27474,"at":1793803438877},"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}