CVE-2026-49941Net::CIDR::Set versions through 0.20 for Perl did not validate IP addresses.
Updated under an hour ago ()
Does this affect you?
It affects rrwo net::cidr::set. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-674, CWE-1287
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jul 22, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
rrwo net::cidr::set rrwo:net::cidr::set | before 0.21 | NVD |
References
- https://metacpan.org/release/RRWO/Net-CIDR-Set-0.21/changesrelease-notes
- http://www.openwall.com/lists/oss-security/2026/06/04/11mailing-list, third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.