Score 7.3 from GitHub Security Advisory (severity: HIGH) published 2026-06-04. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.3; sources differ by 0.0.
A fix is available — apply it.
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.
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
June 4, 2026
July 22, 2026
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| libnet-cidr-set-perl | 0.13-3 ... 0.22-1 (8 versions) |
| — |
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| libnet-cidr-set-perl | 0.13-4 ... 0.23-1 (8 versions) |
| — |
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| libnet-cidr-set-perl | 0.15-1 |
| — |
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| libnet-cidr-set-perl | 0.15-1, 0.19-1, 0.20-1 |
| — |
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 248 total refreshes for this CVE.
Debian:11:libnet-cidr-set-perl · Debian:12:libnet-cidr-set-perl
CWE-1289
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-49942
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