CVE-2026-49942CWE-1289

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

High · published June 4, 2026

CVSS v3.1
7.3
EPSS
0%
Percentile
41.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00488 · 41.2th percentile
Weakness
CWE-1289 · Improper Validation of Unsafe Equivalence in Input
Published
2026-06-04T16:07Z
EPSS history
Timeline
  • 04 JUN 16:07Z
    Net::CIDR::Set versions through 0.20 for Perl did not validate network masks
    cvelistv5