metacpan.orgrelease notes
https://metacpan.org/release/RRWO/Net-CIDR-Set-0.21/changes CVE-2026-49942
HIGH
Net::CIDR::Set versions through 0.20 for Perl did not validate network masks
Record summary
CVE-2026-49942 has a selected CVSS score of 7.3 (high).
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.
Description source: CVE List
Exploitation context
CISA SSVC decision
ExploitationNone
AutomatableYes
Technical impactPartial
CISA Coordinator · SSVC 2.0.3 · Evaluated Jun 4, 2026 · Source: CVE List
Affected products and versions
1| Product | Source | Version range | Status |
|---|---|---|---|
Net::CIDR::SetBrowse RRWO / Net::CIDR::SetDefault status: unaffected | CVE List | Through 0.20 | affected |
References
4nvd.nist.govrelated
https://nvd.nist.gov/vuln/detail/CVE-2025-40911 nvd.nist.govrelated
https://nvd.nist.gov/vuln/detail/CVE-2026-45191 nvd.nist.gov
https://nvd.nist.gov/vuln/detail/CVE-2026-49942