Vulnerability in Rrwo Net\
CVE-2026-49942
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.
EPSS: 0.003 (22.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
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)
- 9b29abf9-4ab0-4765-b253-1875cd9b441e (related, US Government Resource, Third Party Advisory)
Frequently asked questions
- What is CVE-2026-49942?
- CVE-2026-49942 is a high-severity vulnerability in Rrwo Net\, classified under CWE-1289. CVSS score: 7.3/10. Published 2026-06-04.
- How severe is CVE-2026-49942?
- High severity. CVSS v3 base score is 7.3 out of 10.