| Name | CVE-2026-49940 |
| Description | 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| libnet-cidr-set-perl (PTS) | bullseye | 0.13-3 | vulnerable |
| bookworm | 0.13-4 | vulnerable |
| trixie | 0.15-1 | vulnerable |
| forky, sid | 0.22-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
[trixie] - libnet-cidr-set-perl <no-dsa> (Minor issue)
[bookworm] - libnet-cidr-set-perl <no-dsa> (Minor issue)
[bullseye] - libnet-cidr-set-perl <postponed> (Minor issue)
https://lists.security.metacpan.org/cve-announce/msg/40702749/
https://github.com/robrwo/perl-Net-CIDR-Set/commit/875010b4217afe9a61cee519f0e0250847ecf699 (0.21)