CVE-2025-40911 Affecting libnet-cidr-set-perl package, versions <0.15-1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ECHOLATEST-LIBNETCIDRSETPERL-18674619
- published12 Aug 2026
- disclosed27 May 2025
Introduced: 27 May 2025
CVE-2025-40911 (opens in a new tab)How to fix?
Upgrade Echo:latest libnet-cidr-set-perl to version 0.15-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libnet-cidr-set-perl package and not the libnet-cidr-set-perl package as distributed by Echo.
See How to fix? for Echo:latest relevant fixed versions and status.
Net::CIDR::Set versions 0.10 through 0.13 for Perl does not properly handle leading zero characters in IP CIDR address strings, which could allow attackers to bypass access control that is based on IP addresses.
Leading zeros are used to indicate octal numbers, which can confuse users who are intentionally using octal notation, as well as users who believe they are using decimal notation.
Net::CIDR::Set used code from Net::CIDR::Lite, which had a similar vulnerability CVE-2021-47154.