CVE-2026-49941

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://metacpan.org/release/RRWO/Net-CIDR-Set-0.21/changes	Release Notes
http://www.openwall.com/lists/oss-security/2026/06/04/11	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:rrwo:net\:\:cidr\:\:set:*:*:*:*:*:perl:*:*

History

No history.

Information

Published : 2026-06-04 17:16

Updated : 2026-07-22 20:10

NVD link : CVE-2026-49941

Mitre link : CVE-2026-49941

CVE.ORG link : CVE-2026-49941

JSON object : View

Products Affected

rrwo

net\

CWE

CWE-674

Uncontrolled Recursion

CWE-1287

Improper Validation of Specified Type of Input

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