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 larger networks.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.003 (20.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 20.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Rrwo Net\ — versions \
- Rrwo Net::cidr::set — versions 0
- Rrwo Net\:\:cidr\:\:set
Weakness classification (CWE)
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.