CVE-2026-111997

ip-address: ip-address: Denial of Service via excessive percent characters in IPv6 address input

Published Oct 18, 2026 CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed
Description
ip-address before 10.7.4 allows a denial of service (CPU consumption from quadratic complexity, and application stall) via many % characters in input reaching a function call that uses the Address6 constructor.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-rxp7-6hxx-x8q5 ip-address: Address6 matches a zone identifier in quadratic time ahead of its length limit, allowing a single long string to stall the process
History
Type Values Removed Values Added
First Time appeared Beaugunderson
Beaugunderson ip-address
Vendors & Products Beaugunderson
Beaugunderson ip-address
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Denial of Service via Excessive % Characters in Address6 Parsing ip-address: ip-address: Denial of Service via excessive percent characters in IPv6 address input
References
Metrics threat_severity

None

cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

threat_severity

Moderate

Type Values Removed Values Added
Title Denial of Service via Excessive % Characters in Address6 Parsing
Type Values Removed Values Added
Description ip-address before 10.7.4 allows a denial of service (CPU consumption from quadratic complexity, and application stall) via many % characters in input reaching a function call that uses the Address6 constructor.
Weaknesses CWE-1333
References
Metrics cvssV4_0

{'score': 6.3, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Oct 18, 2026, 11:12 AM
Reserved
Oct 18, 2026, 12:07 AM
Status
Awaiting Analysis
Published
Oct 18, 2026, 1:16 AM
Modified
Oct 19, 2026, 9:13 PM
Severity
Moderate
Public date
Oct 18, 2026, 12:07 AM