CVE-2026-49940

June 4, 2026, 7:15 p.m.

6.5
Medium

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.

Product(s) Impacted

Vendor Product Versions
Perl
  • Net

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-1289
Improper Validation of Unsafe Equivalence in Input
The product receives an input value that is used as a resource identifier or other type of reference, but it does not validate or incorrectly validates that the input is equivalent to a potentially-unsafe value.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a perl net cidr set <0.20 / / /

References

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

Tags

CWE-1289
9b29abf9-4ab0-4765-b253-1875cd9b441e
2026-06-04
CVE-2026-49940

CVSS Score

6.5 / 10

CVSS Data - 3.1

  • Attack Vector: NETWORK
  • Attack Complexity: LOW
  • Privileges Required: NONE
  • Scope: UNCHANGED
  • Confidentiality Impact: LOW
  • Integrity Impact: LOW
  • Availability Impact: NONE

    • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

    View Vector String

Timeline

Published: June 4, 2026, 5:16 p.m.
Last Modified: June 4, 2026, 7:15 p.m.

Status : Undergoing Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

9b29abf9-4ab0-4765-b253-1875cd9b441e

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.