Vulnerability-Lookup

GHSA-5VF8-328M-MXJ5

Vulnerability from github – Published: 2026-05-10 21:30 – Updated: 2026-05-12 15:31

Details

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

CVE-2026-45190 (GCVE-0-2026-45190)

Vulnerability from cvelistv5 – Published: 2026-05-10 20:15 – Updated: 2026-05-12 14:31

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 ?

6.5 (Medium)


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

CWE

CWE-1289 - Improper Validation of Unsafe Equivalence in Input

Assigner

CPANSec

References

3 references

URL	Tags
https://github.com/stigtsp/Net-CIDR-Lite/commit/c…	patch
https://metacpan.org/release/STIGTSP/Net-CIDR-Lit…	release-notes
https://www.cve.org/CVERecord?id=CVE-2026-45191	related

Impacted products

1 product

Vendor	Product	Version
STIGTSP	Net::CIDR::Lite	Affected: 0 , < 0.24 (custom)

Show details on NVD website

JSON

To clipboard

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              "attackVector": "NETWORK",
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              "baseScore": 6.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
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              "scope": "UNCHANGED",
              "userInteraction": "NONE",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-5VF8-328M-MXJ5

CVE-2026-45190 (GCVE-0-2026-45190)

Tags

Sightings

Nomenclature