Linux · 
Amazon Linux · Security advisory · April 27, 2026
Amazon Linux · Security advisory · April 27, 2026ALAS2023-2026-1624: perl-Net-CIDR-Lite security update
ALAS2023-2026-1624, released April 27, 2026, fixes 2 CVEs in perl-Net-CIDR-Lite (version 0.22-8.amzn2023.0.1). None of them is reported as exploited. Patch Radar priority: High.
High
CVEs closed
2
None rated Critical
Exploited
0
None reported
Highest CVSS
7.5
Base score, 0 to 10
Highest EPSS
0.0032
24th percentile
Priority of the 2 CVEs
Patch now 0
Urgent 0
High 1
Routine 1
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| perl-Net-CIDR-Lite | amzn 2023 | 0.22-8.amzn2023.0.1 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2026-40198 | libnet-cidr-lite-perl: Net::CIDR::Lite versions before 0.23 for Perl does not validate IPv6 group count, which may allow IP ACL bypass | 7.5 | 0.0032 | None reported |
| Routine | CVE-2026-40199 | libnet-cidr-lite-perl: Net::CIDR::Lite versions before 0.23 for Perl mishandles IPv4 mapped IPv6 addresses, which may allow IP ACL bypass | 6.5 | 0.0031 | None reported |
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