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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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:50a476901841df7529814689ab8d0b73a175b4eef613efb510534ad6c91f5cf4
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-674","description":"CWE-674 Uncontrolled Recursion","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:acb0d520d1da02bee6ece15904f16c06a84bd36939fd35fa40466bda52d7413d · sha256:ded9ae6eb874ac29… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-1287","description":"CWE-1287 Improper Validation of Specified Type of Input","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:acb0d520d1da02bee6ece15904f16c06a84bd36939fd35fa40466bda52d7413d · sha256:ded9ae6eb874ac29… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"collectionURL":"https://cpan.org/modules","defaultStatus":"unaffected","packageName":"Net-CIDR-Set","product":"Net::CIDR::Set","programRoutines":[{"name":"Net::CIDR::Set::IPv4::_encode"},{"name":"Net::CIDR::Set::IPv6::_encode"}],"repo":"https://github.com/robrwo/perl-Net-CIDR-Set","vendor":"RRWO","versions":[{"lessThanOrEqual":"0.20","status":"affected","version":"0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:acb0d520d1da02bee6ece15904f16c06a84bd36939fd35fa40466bda52d7413d · sha256:ded9ae6eb874ac29… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:acb0d520d1da02bee6ece15904f16c06a84bd36939fd35fa40466bda52d7413d · sha256:ded9ae6eb874ac29… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-674","description":"CWE-674 Uncontrolled Recursion","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:acb0d520d1da02bee6ece15904f16c06a84bd36939fd35fa40466bda52d7413d · sha256:ded9ae6eb874ac29… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-1287","description":"CWE-1287 Improper Validation of Specified Type of Input","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:acb0d520d1da02bee6ece15904f16c06a84bd36939fd35fa40466bda52d7413d · sha256:ded9ae6eb874ac29… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"url":"http://www.openwall.com/lists/oss-security/2026/06/04/11"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:acb0d520d1da02bee6ece15904f16c06a84bd36939fd35fa40466bda52d7413d · sha256:ded9ae6eb874ac29… · /containers/adp/1/references/0
{"tags":["release-notes"],"url":"https://metacpan.org/release/RRWO/Net-CIDR-Set-0.21/changes"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:acb0d520d1da02bee6ece15904f16c06a84bd36939fd35fa40466bda52d7413d · sha256:ded9ae6eb874ac29… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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