PT-2026-39538 · Cpan+2 · Net-Cidr-Lite+2

Stigtsp · Published 2026-05-10 · Updated 2026-06-18 · CVE-2026-45190

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Name of the Vulnerable Software and Affected Versions Net::CIDR::Lite versions prior to 0.24

Description Net::CIDR::Lite for Perl fails to properly validate IP address and CIDR mask inputs. Inputs containing non-ASCII digit characters or a trailing newline pass validation but are re-encoded by the parser into an address different from the original input string. This can cause the find() and bin find() functions to incorrectly match or miss addresses, potentially leading to an IP Access Control List (ACL) bypass.

Recommendations Update to version 0.24 or later.

Fix

Weakness Enumeration

CWE-1289

Related Identifiers

CVE-2026-45190

OPENSUSE-SU-2026:10780-1

USN-8453-1

Affected Products

Linuxmint

Net-Cidr-Lite

Ubuntu

References · 26

• https://github.com/stigtsp/Net-CIDR-Lite/commit/ca9542adec87110556601d7ce48381ea8d13e692.patch · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-45190 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-45190 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-45190 · Vendor Advisory
• https://osv.dev/vulnerability/USN-8453-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-45191 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-45191 · Security Note
• https://ubuntu.com/security/notices/USN-8453-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10780-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-45190 · Security Note
• https://ubuntu.com/security/CVE-2026-45190 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-45190 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2026-45190 · Vendor Advisory
• https://github.com/stigtsp/Net-CIDR-Lite/commit/ca9542adec87110556601d7ce48381ea8d13e692 · Note
• https://twitter.com/oss_security/status/2055155323271249989 · Twitter Post