{"id":"EM-20261103-NMG4","url":"https://cyber.eventmonitor.net/incident/EM-20261103-NMG4/kore-vulnerability-cve-2026-121727/","type":"cve","title":"Kore Vulnerability (CVE-2026-121727)","subtitle":"CVE-2026-121727","subject":"CVE-2026-121727","status":"Developing","severity":"high","affected":[],"headline":null,"born":"2026-11-03T23:17:36.043Z","firstSignal":"2026-11-03T22:55:33.000Z","lastSignal":"2026-11-03T23:17:36.043Z","updated":"2026-11-06T00:58:29.349Z","revision":1,"life":[{"status":"Born","at":"2026-11-03T23:17:36.043Z","why":"second independent source: C6 NVD CVE API 2.0"},{"status":"Developing","at":"2026-11-03T23:17:36.043Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-03T22:55:33.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-03T23:17:36.043Z","what":"Born: second source, C6 NVD CVE API 2.0. Page EM-20261103-NMG4 created."}],"stages":[{"name":"Disclosed","at":"2026-11-03T23:17:36.043Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-03T23:17:36.043Z","detail":"CVSS 8.7 · EPSS 0.4%"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-03T22:55:33.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-03T22:55:33.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":3,"title":"Red Hat: CVE-2026-121727 (important)","text":"kore: kore: Denial of Service via integer underflow in HTTP request body handling","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-121727.json"},{"at":"2026-11-03T23:17:36.043Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":3,"title":"CVE-2026-121727 (CVSS 8.7)","text":"Kore before 4.3.0 contains an integer underflow vulnerability in HTTP request body handling that allows unauthenticated attackers to bypass http_body_max by sending more body bytes than declared. Attackers can send oversized first segments over many concurrent POST, PUT or DELETE connections, wrapping content_length to grow buffers unbounded and exhaust worker memory.","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121727"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-03T23:17:36.043","score":8.7,"severity":"HIGH","desc":"Kore before 4.3.0 contains an integer underflow vulnerability in HTTP request body handling that allows unauthenticated attackers to bypass http_body_max by sending more body bytes than declared. Attackers can send oversized first segments over many concurrent POST, PUT or DELETE connections, wrappi","product":"","seen":1793803438877},"kev":null,"epss":{"epss":0.00389,"pct":0.33222,"at":1793803438877},"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}