{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-45190", "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "state": "PUBLISHED", "assignerShortName": "CPANSec", "dateReserved": "2026-05-10T16:36:05.708Z", "datePublished": "2026-05-10T20:15:24.721Z", "dateUpdated": "2026-05-12T14:31:01.908Z"}, "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->new();\n $cidr->add(\"::1\\n/128\");\n $cidr->find(\"::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": {"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "shortName": "CPANSec", "dateUpdated": "2026-05-10T20:15:24.721Z"}, "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"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-05-12T14:30:52.674727Z", "id": "CVE-2026-45190", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-12T14:31:01.908Z"}}]}}

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{"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->new();\n $cidr->add(\"::1\\n/128\");\n $cidr->find(\"::1a\"); # incorrectly returns true\n\nSee also CVE-2026-45191."}], "id": "CVE-2026-45190", "lastModified": "2026-05-12T16:48:58.260", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 2.5, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2026-05-10T21:16:29.273", "references": [{"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "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"}], "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1289"}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "type": "Secondary"}]}

{"bugzilla": {"description": "Net::CIDR::Lite: perl: Net::CIDR::Lite: IP ACL bypass due to improper input validation", "id": "2468673", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468673"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "status": "draft"}, "cwe": "CWE-1287", "details": ["A flaw was found in Net::CIDR::Lite, a Perl module for handling IP address ranges. This vulnerability allows a remote attacker to bypass IP Access Control Lists (ACLs) due to improper validation of IP address and CIDR (Classless Inter-Domain Routing) mask inputs. Specifically, inputs containing trailing newlines or non-ASCII digit characters are incorrectly processed, leading to a mismatch between the intended and actual IP addresses. This can cause functions like `find()` and `bin_find()` to incorrectly allow or deny access, compromising network security policies."], "mitigation": {"lang": "en:us", "value": "To mitigate this issue, ensure that all IP address and CIDR mask inputs processed by applications utilizing the `Net::CIDR::Lite` Perl module are strictly sanitized. This involves removing any trailing newline characters or non-ASCII digits from the input strings before they are passed to `Net::CIDR::Lite` functions such as `add()`, `find()`, or `bin_find()`. Implementing robust input validation at the application layer will prevent the module from misinterpreting malformed inputs and bypassing intended access controls."}, "name": "CVE-2026-45190", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "perl", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Fix deferred", "package_name": "perl", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "perl", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "perl", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "perl:5.32/perl", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "perl", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-05-10T20:15:24Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-45190\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-45190\nhttps://github.com/stigtsp/Net-CIDR-Lite/commit/ca9542adec87110556601d7ce48381ea8d13e692.patch\nhttps://metacpan.org/release/STIGTSP/Net-CIDR-Lite-0.24/changes\nhttps://www.cve.org/CVERecord?id=CVE-2026-45191"], "threat_severity": "Moderate"}