CVE-2026-49940

Net::CIDR::Set versions through 0.20 for Perl accept non-ASCII IP addresses and netmasks

State: Published
Severity: 6.5 Medium
Published: Jun 4, 2026
Updated: Jun 4, 2026
Reserved: Jun 2, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N	CISA-ADP

Weaknesses

CWE-1289 Improper Validation of Unsafe Equivalence in Input

Affected Products

Product	Versions
Net::CIDR::SetRRWO	0.20 and earlierAffected

References

https://metacpan.org/release/RRWO/Net-CIDR-Set-0.21/changesrelease-notes
https://nvd.nist.gov/vuln/detail/CVE-2025-40911related

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.