CVE-2026-49941
Last modified
CVE-2026-49941 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 0.33% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Rrwo | Net\ | < 0.21 | Cidr\ |
References
- http://www.openwall.com/lists/oss-security/2026/06/04/11Mailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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