Vulnerability Description
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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Rrwo | Net\ | < 0.21, \ |
Related Weaknesses (CWE)
References
- https://metacpan.org/release/RRWO/Net-CIDR-Set-0.21/changesRelease Notes
- http://www.openwall.com/lists/oss-security/2026/06/04/11Mailing ListThird Party Advisory
FAQ
What is CVE-2026-49941?
CVE-2026-49941 is a vulnerability with a CVSS score of 7.5 (HIGH). 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...
How severe is CVE-2026-49941?
CVE-2026-49941 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-49941?
Check the references section above for vendor advisories and patch information. Affected products include: Rrwo Net\.