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CVE-2026-86287 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

Net::IP::LPM versions before 1.12 for Perl accept malformed prefix lengths. Non-numeric and non-ASCII prefix lengths are accepted and treated as 0. Integers over 31 bits are silently truncated. A single malformed mask will poison the lookup table. The result is that the lookup will silently succeed for every address. An allow-list will allow every address, and a deny-list will block every address.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:8.1 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

CNA: CISA-ADPCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/robrwo/perl-Net-IP-LPM/commit/814f8baa85537827db8c3b3d251e48db7aca318f.patch	CPANSec	Source CodeVendor
https://metacpan.org/release/RRWO/Net-IP-LPM-1.12/changes	CPANSec	Release NotesVendor
http://www.openwall.com/lists/oss-security/2026/09/07/1	CVE	AdvisoryMailing ListRemedy

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-1287	Improper Validation of Specified Type of Input	CPANSec

Affected Products

Product	Versions
Net::IP::LPM	< 1.12
CPE No CPEs found in CPE dictionary for this product. Remediation Upgrade: 1.12moderate effort

Change History

3 change records found show changes

Date	Action	Recorded By
Sep 8, 2026	CVE Modified	CISA-ADP
Sep 7, 2026	CVE Modified	CVE
Sep 7, 2026	New CVE Received	CPANSec