CVE-2026-45190

Net::CIDR::Lite versions before 0.24 for Perl does not properly validate IP address and CIDR mask inputs, which may allow IP ACL bypass. Inputs containing a trailing newline or non-ASCII digit characters pass the validators but are then re-encoded by the parser to a different address than the input string spelled. find() and bin_find() can match or miss addresses as a result. Example: my $cidr = Net::CIDR::Lite->new(); $cidr->add("::1\n/128"); $cidr->find("::1a"); # incorrectly returns true See also CVE-2026-45191.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/stigtsp/Net-CIDR-Lite/commit/ca9542adec87110556601d7ce48381ea8d13e692.patch
https://metacpan.org/release/STIGTSP/Net-CIDR-Lite-0.24/changes
https://www.cve.org/CVERecord?id=CVE-2026-45191

Configurations

No configuration.

History

24 Jul 2026, 13:10

Type	Values Removed	Values Added
Summary		(es) Las versiones de Net::CIDR::Lite anteriores a la 0.24 para Perl no validan correctamente las entradas de dirección IP y máscara CIDR, lo que puede permitir la omisión de ACL de IP. Las entradas que contienen un salto de línea final o caracteres de dígitos no ASCII pasan los validadores, pero luego son recodificadas por el analizador a una dirección diferente de la que especifica la cadena de entrada. find() y bin_find() pueden coincidir o no con direcciones como resultado. Ejemplo: my $cidr = Net::CIDR::Lite -> new(); $cidr -> add('::1\n/128'); $cidr -> find('::1a'); # devuelve true incorrectamente Véase también CVE-2026-45191.

12 May 2026, 15:16

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 6.5

10 May 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-10 21:16

Updated : 2026-07-24 13:10

NVD link : CVE-2026-45190

Mitre link : CVE-2026-45190

CVE.ORG link : CVE-2026-45190

JSON object : View

Products Affected

No product.

CWE

CWE-1289

Improper Validation of Unsafe Equivalence in Input

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