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CVE-2026-49942

7.3 HIGH

Net::CIDR::Set versions through 0.20 for Perl did not validate network masks

Published: 2026-06-04 · Last updated: 2026-06-08

Severity and scoring

CVSS
7.3 HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CWE
CWE-1289

Affected products

VendorProduct
rrwonet\

Description

Net::CIDR::Set versions through 0.20 for Perl did not validate network masks. The mask portion of a network mask could contain Unicode digits such as the Arabic-Indic One (U+0661), or non-digits, which were ignored. This could allow network masks to accept larger networks. Leading zeros were also accepted, but treated as decimal instead of octal. This could lead to confusion about what networks are acceptable.

Source: NVD

References

Related CVEs

Same vendor

  • CVE-2026-49941 — Net::CIDR::Set versions through 0.20 for Perl did not validate IP addresses (7.5 HIGH)
  • CVE-2026-49940 — Net::CIDR::Set versions through 0.20 for Perl accept non-ASCII IP addresses and netmasks (6.5 MEDIUM)

Same CWE

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  • CVE-2026-39821 — The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label (9.6 CRITICAL)
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