{"id":"EM-20261029-RK0B","url":"https://cyber.eventmonitor.net/incident/EM-20261029-RK0B/","type":"cve","title":"decode-uri-component Vulnerability (CVE-2026-118664)","subtitle":"CVE-2026-118664","subject":"CVE-2026-118664","status":"Developing","severity":"high","affected":[],"headline":null,"born":"2026-10-29T16:41:28.000Z","firstSignal":"2026-10-28T21:16:56.687Z","lastSignal":"2026-10-29T16:41:28.000Z","updated":"2026-11-04T14:43:58.877Z","revision":1,"life":[{"status":"Born","at":"2026-10-29T16:41:28.000Z","why":"second independent source: C26 GitHub Advisory Database"},{"status":"Developing","at":"2026-10-29T16:41:28.000Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-10-28T21:16:56.687Z","what":"First signal: C6 NVD CVE API 2.0"},{"at":"2026-10-29T16:41:28.000Z","what":"Born: second source, C26 GitHub Advisory Database. Page EM-20261029-RK0B created."}],"stages":[{"name":"Disclosed","at":"2026-10-28T21:16:56.687Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-10-28T21:16:56.687Z","detail":"CVSS 8.2 · EPSS 0.3%"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":null,"detail":"None in sources yet"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-10-28T21:16:56.687Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":3,"title":"CVE-2026-118664 (CVSS 8.2)","text":"decode-uri-component provides a more robust alternative to decodeURIComponent. Prior to 0.5.1, decodeUriComponent in index.js falls back to customDecodeURIComponent after native decoding throws, and the fallback collects every distinct percent-encoded run before performing a full-string regular-expression replacement for each entry. Malformed input containing many distinct runs can therefore make both the number of replacements and the scanned input length grow together, causing quadratic CPU consumption and blocking the Node.js event loop; request-body inputs can reach the demonstrated size, ","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-118664"},{"at":"2026-10-29T16:41:28.000Z","source":"C26","sourceName":"GitHub Advisory Database","role":"Database","severity":3,"title":"GHSA-qr28-fpjm-wq7f / CVE-2026-118664: decode-uri-component vulnerable to denial of service via quadratic replacement of percent-encoded runs","text":"npm:decode-uri-component","url":"https://github.com/advisories/GHSA-qr28-fpjm-wq7f"}],"crowd":[],"reference":{"nvd":{"published":"2026-10-28T21:16:56.687","score":8.2,"severity":"HIGH","desc":"decode-uri-component provides a more robust alternative to decodeURIComponent. Prior to 0.5.1, decodeUriComponent in index.js falls back to customDecodeURIComponent after native decoding throws, and the fallback collects every distinct percent-encoded run before performing a full-string regular-expr","product":"","seen":1793803438877},"kev":null,"epss":{"epss":0.00318,"pct":0.2491,"at":1793803438877},"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}