Net::IP::LPM version 1.10 for Perl does not properly consider leading zero characters in IP CIDR address strings, which could allow attackers to bypass access control that is based on IP addresses

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Summary

CVECVE-2025-40910
StatePUBLISHED
AssignerCPANSec
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-06-27 13:15:24 UTC
Updated2026-07-03 13:16:54 UTC
DescriptionNet::IP::LPM version 1.10 for Perl does not properly consider leading zero characters in IP CIDR address strings, which could allow attackers to bypass access control that is based on IP addresses. Leading zeros are used to indicate octal numbers, which can confuse users who are intentionally using octal notation, as well as users who believe they are using decimal notation.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Problem Types: CWE-1287 | CWE-1287 CWE-1287 Improper Validation of Specified Type of Input

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA TPODER NetIPLPM affected 1.10 custom Not specified

References

ReferenceSourceLinkTags
metacpan.org/release/TPODER/Net-IP-LPM-1.10/diff/TPODER/Net-IP-LPM-1.09/li... 9b29abf9-4ab0-4765-b253-1875cd9b441e metacpan.org
blog.urth.org/2021/03/29/security-issues-in-perl-ip-address-distros 9b29abf9-4ab0-4765-b253-1875cd9b441e blog.urth.org
rt.cpan.org/Ticket/Display.html 9b29abf9-4ab0-4765-b253-1875cd9b441e rt.cpan.org
security.metacpan.org/patches/N/Net-IP-LPM/1.10/CVE-2025-40910-r1.patch 9b29abf9-4ab0-4765-b253-1875cd9b441e security.metacpan.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Workarounds

CNA: Apply the patch.

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