CVE-2026-86287

    Dashboard / Vulnerabilities / CVE-2026-86287

    CVE-2026-86287

    Published: 7 Sept 2026Last Modified: 10 Sept 2026

    Summary: Net::IP::LPM versions before 1.12 for Perl accept malformed prefix lengths

    Details: Net::IP::LPM versions before 1.12 for Perl accept malformed prefix lengths. Non-numeric and non-ASCII prefix lengths are accepted and treated as 0. Integers over 31 bits are silently truncated. A single malformed mask will poison the lookup table. The result is that the lookup will silently succeed for every address. An allow-list will allow every address, and a deny-list will block every address.

    References: http://www.openwall.com/lists/oss-security/2026/09/07/1, https://cpan.org/modules, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86287.json, https://metacpan.org/release/RRWO/Net-IP-LPM-1.12/changes, https://nvd.nist.gov/vuln/detail/CVE-2026-86287, https://github.com/robrwo/perl-Net-IP-LPM/commit/814f8baa85537827db8c3b3d251e48db7aca318f.patch, https://github.com/robrwo/perl-Net-IP-LPM

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -77cb686c281c60af48aaaea95d3c660f68e7d718

    Affected versions

    1.11

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-86287 | CVE-DB