CVE catalog

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

[CVE catalog]

Severity
High · CVSS 7.5
Published
Source
[NVD] · [CVE record]
EPSS
0.33% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

DistributionPackageReleaseVersionStatus
Debianlibnet-cidr-set-perlsid0.23-1fixed
Debianlibnet-cidr-set-perlforky0.23-1fixed
Debianlibnet-cidr-set-perltrixie0.15-1+deb13u1fixed
Debianlibnet-cidr-set-perlbookworm0.13-4vulnerable
Cpelibnet-cidr-set-perlNot reportedNot reportedvulnerable
Cpenet\Not reported0.21fixed

Fixed-version evidence

DistributionPackageTypeReleaseFixed versionUrgencyOriginBugs
Debianlibnet-cidr-set-perlsourcesid0.21-1not yet assignedNot reportedNot reported
Debianlibnet-cidr-set-perlsourceforky0.21-1not yet assignedNot reportedNot reported
Debianlibnet-cidr-set-perlsourcetrixie0.15-1+deb13u1not yet assignedNot reportedNot reported
Debianlibnet-cidr-set-perlsourcebookworm(unfixed)not yet assignedNot reportedNot reported
Cpenet\cpeNot reported0.21Not reportedNot reportedNot reported

Notes

[bookworm] libnet-cidr-set-perl: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

  • [libnet-cidr-set-perl]Affected
    Details (2)

    • 0.13-4 · all · bookworm

      Affected

      nvd · libnet-cidr-set-perl · debian · bookworm; nvd · libnet-cidr-set-perl · debian · 12

    • 0.13-4 · all · bookworm

      Affected

      nvd · libnet-cidr-set-perl · debian · bookworm; nvd · libnet-cidr-set-perl · debian · 12

[Debian 13 (Trixie)]

  • [libnet-cidr-set-perl]Affected
    Details (2)

    • 0.15-1 · all · trixie

      Affected · Fixed: 0.15-1+deb13u1

      nvd · libnet-cidr-set-perl · debian · 13

    • 0.15-1 · all · trixie

      Affected · Fixed: 0.15-1+deb13u1

      nvd · libnet-cidr-set-perl · debian · 13

Observed:

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]