PatchTheCVECVE-2026-49941: Net::CIDR::Set versions through 0.20 for Perl did not validate IP addresses. The add method called the _encod
CVE-2026-49941 is a high-severity flaw (CVSS 7.5) affecting net\. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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 o
Why this priority
- High severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Last updated 2026-07-22 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-49941?
net\: upgrade to 0.21. Exact commands for each OS are on this page.
Is CVE-2026-49941 being exploited?
CVE-2026-49941 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-49941 affect?
CVE-2026-49941 affects net\. Severity is high (CVSS 7.5). 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 ad
How urgent is CVE-2026-49941?
Priority 38/100. High severity; Remotely exploitable, no login, no user action
Software pages
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