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CVE-2026-111997: CWE-1333 Inefficient Regular Expression Complexity in beaugunderson ip-address

0
Medium
VulnerabilityCVE-2026-111997cvecve-2026-111997cwe-1333
Published: 10/18/2026 (10/18/2026, 00:07:21 UTC)
Source: CVE Database V5
Vendor/Project: beaugunderson
Product: ip-address

Description

CVE-2026-111997 is a vulnerability in the beaugunderson ip-address library before version 10.7.4. It involves inefficient regular expression complexity that can lead to denial of service through excessive CPU consumption and application stalls when input containing many '%' characters triggers the Address6 constructor.

CVSS v4.0

Score 6.3medium

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
None
User Interaction
None
Vuln. Confidentiality
None
Vuln. Integrity
None
Vuln. Availability
Low
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Affected software

beaugunderson

ip-address

Affected versions
>=0 <10.7.4
GitHub Actionsmore threats →ai
beaugunderson/ip-address
pkg:github/beaugunderson/ip-address
Affected versions
>=0 <10.7.4

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 10/18/2026, 01:03:12 UTC

Technical Analysis

The vulnerability identified as CVE-2026-111997 affects the ip-address library by beaugunderson in versions prior to 10.7.4. It is caused by inefficient regular expression handling (CWE-1333) that results in quadratic complexity. When input with many '%' characters is processed, it reaches a function call using the Address6 constructor, causing high CPU usage and potentially stalling the application. This can be exploited to cause a denial of service condition.

Potential Impact

An attacker can cause denial of service by supplying crafted input with many '%' characters, leading to excessive CPU consumption and application stalls. This impacts availability but does not involve privilege escalation, confidentiality, or integrity violations according to the CVSS vector.

Mitigation Recommendations

A fix is available in ip-address version 10.7.4 and later. Users should upgrade to version 10.7.4 or newer to remediate this vulnerability. No vendor advisory was provided, so patch status is inferred from the version information.

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Technical Details

Data Version
5.2
Assigner Short Name
mitre
Date Reserved
2026-10-18T00:07:20.697Z
Cvss Version
4.0
State
PUBLISHED

Threat ID: 6ad417712cdf04f6568d4274

Added to database: 10/18/2026, 00:48:49 UTC

Last enriched: 10/18/2026, 01:03:12 UTC

Last updated: 10/18/2026, 01:08:09 UTC

Views: 13

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