What is CVE-2026-49940?

CVE-2026-49940 is a medium-severity vulnerability in Rrwo Net\, 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\

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…

EPSS: 0.002 (9.6th percentile) — read the EPSS interpretation.

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\ — versions \
Rrwo Net::cidr::set — versions 0

Weakness classification (CWE)

CWE-1289

References

9b29abf9-4ab0-4765-b253-1875cd9b441e (release-notes, Release Notes)
9b29abf9-4ab0-4765-b253-1875cd9b441e (related, US Government Resource, Third Party Advisory)

Frequently asked questions

What is CVE-2026-49940?: CVE-2026-49940 is a medium-severity vulnerability in Rrwo Net\, 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.