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CVE details

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.

Score
7.5 high
Published
2026-06-04
Links
NVD · cve.org · Report wrong data

Matched ports (1)

PortPackageVersionStatusMaintainer
net/p5-Net-CIDR-Setp5-Net-CIDR-Set0.13_1unaddressedanes@anes.su

Template for a VuXML entry

Range taken from the CVE record, check it before committing. make newentry in security/vuxml creates the vid.

  <vuln vid="FIXME (make newentry)">
    <topic>FIXME -- FIXME</topic>
    <affects>
      <package>
	<name>p5-Net-CIDR-Set</name>
	<range><lt>FIXME</lt></range>
      </package>
    </affects>
    <description>
      <body xmlns="http://www.w3.org/1999/xhtml">
	<p>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.</p>
      </body>
    </description>
    <references>
      <cvename>CVE-2026-49941</cvename>
      <url>https://nvd.nist.gov/vuln/detail/CVE-2026-49941</url>
    </references>
    <dates>
      <discovery>2026-06-04</discovery>
      <entry>2026-10-26</entry>
    </dates>
  </vuln>