Inefficient Regular Expression Complexity Affecting node-n3 package, versions *


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.35% (27th percentile)

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  • Snyk IDSNYK-ECHOLATEST-NODEN3-20936519
  • published14 Oct 2026
  • disclosed12 Oct 2026

Introduced: 12 Oct 2026

NewCVE-2026-109563  (opens in a new tab)
CWE-1333  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest node-n3.

NVD Description

Note: Versions mentioned in the description apply only to the upstream node-n3 package and not the node-n3 package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1