{"id":"CVE-2026-109563","title":"N3.js before 2.11.1 contains a regular expression denial of service vulnerability in the N3Lexer number pattern that backtracks quadratically on long digit runs","summary":"N3.js before 2.11.1 contains a regular expression denial of service vulnerability in the N3Lexer number pattern that backtracks quadratically on long digit runs. Attackers can supply untrusted Turtle or N3 input containing long runs of d…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-1333"],"published":"2026-10-12","updated":"2026-10-12","sourceUpdated":"2026-10-12T21:17:12.713","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-109563","references":[{"url":"https://github.com/rdfjs/N3.js","label":"disclosure@vulncheck.com"},{"url":"https://github.com/rdfjs/N3.js/commit/b1c497fddb02c4772d61916bd2634115f45f424d","label":"disclosure@vulncheck.com"},{"url":"https://github.com/rdfjs/N3.js/pull/760","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/n3-js-before-2.11.1-redos-via-n3lexer-numeric-literal-regex","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"ingestedAt":"2026-10-12T22:05:40.359Z","slug":"CVE-2026-109563","body":"## Overview\n\nN3.js before 2.11.1 contains a regular expression denial of service vulnerability in the N3Lexer number pattern that backtracks quadratically on long digit runs. Attackers can supply untrusted Turtle or N3 input containing long runs of digits that do not end a number, blocking the Node.js event loop and causing denial of service.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}