Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-04. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
Net::CIDR::Set versions through 0.20 for Perl did not validate IP addresses.
The add method called the _encode method to parse addresses. If the addresses did not look like netmasks or network ranges, then they were assumed to single IP addresses and passed back to itself as a 32-bit or 128-bit netmask.
If the argument was not a well-formed IP address, then this would lead to indefinite recursion.
An attacker could use this to cause a denial of service.
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 | Fixed in | Dependents |
|---|---|---|---|
| libnet-cidr-set-perl | 0.13-3 ... 0.22-1 (8 versions) | — | — |
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| libnet-cidr-set-perl | 0.13-4 ... 0.22-1 (7 versions) | — | — |
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| libnet-cidr-set-perl | 0.15-1 ... 0.22-1 (6 versions) | — | — |
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| libnet-cidr-set-perl | 0.15-1, 0.19-1, 0.20-1 | 0.21-1 | — |
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 220 total refreshes for this CVE.
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-49941
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