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TI-2026-36789 Aliases CVE-2026-49940GHSA-hpv8-77xm-27wx

Net::CIDR::Set versions through 0.20 for Perl accept non-ASCII IP addresses and netmasks

Priority LOW 34CWE-1289Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

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

Summary

Net::CIDR::Set versions through 0.20 for Perl accept non-ASCII IP addresses and netmasks. Unicode digits such as the Arabic-Indic One (U+0661) were accepted but not properly parsed as numbers. This could allow network masks to accept larger networks.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00196 9th percentileScored 2026-11-08
Fix No fix listed No fixed version in the sources yet

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
RRWONet::CIDR::Setup to 0.20—No fix listedCNA
  • Net::CIDR::Set VendorRRWO Affected up to 0.20 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:rrwo:net\:\:cidr\:\:set:*:*:*:*:*:perl:*:* cidr\VulnerableRRWO
  • cpe:2.3:a:rrwo:net\:\:cidr\:\:set:*:*:*:*:*:perl:*:* Versions cidr\ Vulnerable ·RRWO

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-49940
  2. 2026-10-03 Alias added: GHSA-hpv8-77xm-27wx

References

Advisory 1

Other 1

  • TI-2026-36790 Uncontrolled recursion in RRWO Net::CIDR::Set CVSS 3.1HIGH 7.5
  • TI-2026-36791 Net::CIDR::Set versions through 0.20 for Perl did not validate network masks CVSS 3.1HIGH 7.3

Sources

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