What is CVE-2026-49940?

CVE-2026-49940 is a medium-severity vulnerability in Rrwo Net::cidr::set, classified under CWE-1289. CVSS score: 6.5/10. Published 2026-06-04.

How severe is CVE-2026-49940?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Rrwo Net::cidr::set

CVE-2026-49940

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 lar…

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Rrwo Net::cidr::set — versions 0

Weakness classification (CWE)

CWE-1289

References

9b29abf9-4ab0-4765-b253-1875cd9b441e (release-notes)
9b29abf9-4ab0-4765-b253-1875cd9b441e (related)

Frequently asked questions

What is CVE-2026-49940?: CVE-2026-49940 is a medium-severity vulnerability in Rrwo Net::cidr::set, classified under CWE-1289. CVSS score: 6.5/10. Published 2026-06-04.
How severe is CVE-2026-49940?: Medium severity. CVSS v3 base score is 6.5 out of 10.