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TI-2026-71293 Aliases CVE-2026-109563GHSA-xf53-x4jg-3wwc

ReDoS in N3.js N3Lexer numeric literal regex

Priority MEDIUM 44CWE-1333Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-1333.

Summary

N3.js before 2.11.1 contains a regular expression denial of service flaw in the N3Lexer number pattern (CWE-1333). The pattern backtracks quadratically on long runs of digits that do not end a number. An attacker can supply untrusted Turtle or N3 input containing such runs, blocking the Node.js event loop and causing denial of service.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00346 28th percentileScored 2026-11-07
Fix Fixed N3.js (rdfjs): 2.11.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
rdfjsN3.jsbefore 2.11.12.11.1Patch availableCNA
  • N3.js Vendorrdfjs Affected before 2.11.1 Fixed in 2.11.1 Patch available CNA

Remediation

Upgrade N3.js to version 2.11.1, which fixes the flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA N3.js (rdfjs) Fixed in 2.11.1

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-12 Threatist record created from CVE-2026-109563
  2. 2026-10-13 Alias added: GHSA-xf53-x4jg-3wwc
  3. 2026-10-13 Priority changed: MEDIUM → LOW
  4. 2026-10-14 CISA SSVC decision points changed
  5. 2026-10-14 Priority changed: LOW → MEDIUM
  6. 2026-11-06 Affected versions changed · Red Hat
  7. 2026-11-06 CVSS score added · Red Hat

References

Patch 2

Other 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences