CVE-2026-109563

HIGH 7.5

N3.js before 2.11.1 ReDoS via N3Lexer Numeric-Literal Regex

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

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 digits that do not end a number, blocking the Node.js event loop and causing denial of service.

CWE	CWE-1333
Vendor	rdfjs
Product	n3.js
Published	Oct 12, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

rdfjs / N3.js

0 < 2.11.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/rdfjs/N3.js/pull/760 github.com: https://github.com/rdfjs/N3.js/commit/b1c497fddb02c4772d61916bd2634115f45f424d github.com: https://github.com/rdfjs/N3.js vulncheck.com: https://www.vulncheck.com/advisories/n3-js-before-2.11.1-redos-via-n3lexer-numeric-literal-regex

Credits

Mohammed Arfath A