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TI-2026-33009 Aliases CVE-2026-45190GHSA-5vf8-328m-mxj5

Net::CIDR::Lite versions before 0.24 for Perl does not properly validate IP address and…

Priority LOW 35CWE-1289Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · Low · Low
Fix status
Partial Red Hat: 6 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00311 24th percentileScored 2026-11-07
Fix Partial Net::CIDR::Lite (STIGTSP): 0.24Red Hat: 6 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
STIGTSPNet::CIDR::Litebefore 0.240.24Patch availableCNA
  • Net::CIDR::Lite VendorSTIGTSP Affected before 0.24 Fixed in 0.24 Patch available CNA

Remediation

  • Fix · CNA Net::CIDR::Lite (STIGTSP) Fixed in 0.24

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    STIGTSP Net::CIDR::Lite 0.24

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-33010 Net::CIDR::Lite versions before 0.24 for Perl does not properly consider extraneous zero…Priority LOW 35
    Show all 2 records →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 6AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 7AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred
Red Hat OpenShift Container Platform 4AffectedNo fix yet: Fix deferred
Not affected: 1 product
  • Red Hat Hardened Images

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-45190
  2. 2026-10-03 Alias added: GHSA-5vf8-328m-mxj5

References

Patch 1

Other 2

  • TI-2026-29012 Net::CIDR::Lite versions before 0.23 for Perl does not validate IPv6 group count, which… CVSS 3.1HIGH 7.5
  • TI-2026-33010 Net::CIDR::Lite versions before 0.24 for Perl does not properly consider extraneous zero… CVSS 3.1MEDIUM 6.5
  • TI-2026-29013 Net::CIDR::Lite versions before 0.23 for Perl mishandles IPv4 mapped IPv6 addresses… CVSS 3.1MEDIUM 6.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences