CVE-2026-45190 (GCVE-0-2026-45190)
Vulnerability from cvelistv5 – Published: 2026-05-10 20:15 – Updated: 2026-05-10 20:15
VLAI?
Title
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
Summary
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.
Severity ?
No CVSS data available.
CWE
- CWE-1289 - Improper Validation of Unsafe Equivalence in Input
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| STIGTSP | Net::CIDR::Lite |
Affected:
0 , < 0.24
(custom)
|
{
"containers": {
"cna": {
"affected": [
{
"collectionURL": "https://cpan.org/modules",
"defaultStatus": "unaffected",
"packageName": "Net-CIDR-Lite",
"product": "Net::CIDR::Lite",
"programFiles": [
"Lite.pm"
],
"programRoutines": [
{
"name": "Net::CIDR::Lite::add"
},
{
"name": "Net::CIDR::Lite::_pack_ipv4"
},
{
"name": "Net::CIDR::Lite::_pack_ipv6"
}
],
"repo": "https://github.com/stigtsp/Net-CIDR-Lite",
"vendor": "STIGTSP",
"versions": [
{
"lessThan": "0.24",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "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.\n\nInputs 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.\n\nExample:\n\n my $cidr = Net::CIDR::Lite-\u003enew();\n $cidr-\u003eadd(\"::1\\n/128\");\n $cidr-\u003efind(\"::1a\"); # incorrectly returns true\n\nSee also CVE-2026-45191."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-1289",
"description": "CWE-1289 Improper Validation of Unsafe Equivalence in Input",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-10T20:15:24.721Z",
"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"shortName": "CPANSec"
},
"references": [
{
"tags": [
"patch"
],
"url": "https://github.com/stigtsp/Net-CIDR-Lite/commit/ca9542adec87110556601d7ce48381ea8d13e692.patch"
},
{
"tags": [
"release-notes"
],
"url": "https://metacpan.org/release/STIGTSP/Net-CIDR-Lite-0.24/changes"
},
{
"tags": [
"related"
],
"url": "https://www.cve.org/CVERecord?id=CVE-2026-45191"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to version 0.24 or newer, or apply the patch provided."
}
],
"source": {
"discovery": "UNKNOWN"
},
"timeline": [
{
"lang": "en",
"time": "2026-05-10T00:00:00.000Z",
"value": "Vulnerability found"
},
{
"lang": "en",
"time": "2026-05-10T00:00:00.000Z",
"value": "Net-CIDR-Lite version 0.24 released"
}
],
"title": "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",
"x_generator": {
"engine": "cpansec-cna-tool 0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"assignerShortName": "CPANSec",
"cveId": "CVE-2026-45190",
"datePublished": "2026-05-10T20:15:24.721Z",
"dateReserved": "2026-05-10T16:36:05.708Z",
"dateUpdated": "2026-05-10T20:15:24.721Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2026-45190\",\"sourceIdentifier\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\",\"published\":\"2026-05-10T21:16:29.273\",\"lastModified\":\"2026-05-10T21:16:29.273\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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.\\n\\nInputs 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.\\n\\nExample:\\n\\n my $cidr = Net::CIDR::Lite-\u003enew();\\n $cidr-\u003eadd(\\\"::1\\\\n/128\\\");\\n $cidr-\u003efind(\\\"::1a\\\"); # incorrectly returns true\\n\\nSee also CVE-2026-45191.\"}],\"metrics\":{},\"weaknesses\":[{\"source\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-1289\"}]}],\"references\":[{\"url\":\"https://github.com/stigtsp/Net-CIDR-Lite/commit/ca9542adec87110556601d7ce48381ea8d13e692.patch\",\"source\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\"},{\"url\":\"https://metacpan.org/release/STIGTSP/Net-CIDR-Lite-0.24/changes\",\"source\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\"},{\"url\":\"https://www.cve.org/CVERecord?id=CVE-2026-45191\",\"source\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\"}]}}"
}
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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