CVE-2026-45191— Net::CIDR::Lite versions before 0.24 for Perl does not properly consider extraneous zero characters in CIDR mask values, which may allow IP ACL bypass
Possible ATT&CK Techniques 1AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| STIGTSP | Net::CIDR::Lite | < 0.24 | affected |
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I. Basic Information for CVE-2026-45191
Vulnerability Information
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Vulnerability Title
Net::CIDR::Lite versions before 0.24 for Perl does not properly consider extraneous zero characters in CIDR mask values, which may allow IP ACL bypass
Source: NVD (National Vulnerability Database)
Vulnerability Description
Net::CIDR::Lite versions before 0.24 for Perl does not properly consider extraneous zero characters in CIDR mask values, which may allow IP ACL bypass. Mask forms like "/00" and "/01" pass validation and parse to the same prefix as their unpadded value. See also CVE-2026-45190.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-1289
Source: NVD (National Vulnerability Database)
Vulnerability Title
Net-CIDR-Lite 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Net-CIDR-Lite是Stig个人开发者的一个用于处理CIDR地址的Perl模块。 Net-CIDR-Lite 0.24之前版本存在安全漏洞，该漏洞源于未正确处理CIDR掩码值中的多余零字符，可能导致IP ACL绕过。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| STIGTSP | Net::CIDR::Lite | 0 ~ 0.24 | - |
II. Public POCs for CVE-2026-45191
| # | POC Description | Source Link | Shenlong Link |
|---|
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Advisory · 1Patch · 1Other · 1
- CVE Record: CVE-2026-45190related
- Changes - metacpan.orgrelease-notes
- https://nvd.nist.gov/vuln/detail/CVE-2026-45191
IV. Related Vulnerabilities
Same weakness: CWE-1289
- CVE-2026-45190
Net::CIDR::Lite versions before 0.24 for Perl does not prope - CVE-2026-39972
Mercure has a Topic Selector Cache Key Collision - CVE-2026-34080
xdg-dbus-proxy has an eavesdrop filter bypass allowing messa - CVE-2026-22569
Incorrect startup configuration in ZCC - CVE-2026-33496
Ory Oathkeeper has an authentication bypass by cache key con
V. Comments for CVE-2026-45191
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