CVE-2021-32706

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    CVE-2021-32706

    Published: 4 Aug 2021Last Modified: 27 Aug 2026

    Summary:

    Details: Pi-hole's Web interface provides a central location to manage a Pi-hole instance and review performance statistics. Prior to Pi-hole Web interface version 5.5.1, the `validDomainWildcard` preg_match filter allows a malicious character through that can be used to execute code, list directories, and overwrite sensitive files. The issue lies in the fact that one of the periods is not escaped, allowing any character to be used in its place. A patch for this vulnerability was released in version 5.5.1.

    References: https://github.com/pi-hole/AdminLTE/releases/tag/v5.5.1, https://github.com/pi-hole/AdminLTE/security/advisories/GHSA-5cm9-6p3m-v259

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -fb9bd561fdf936891370d85b32e899dff1dbf9d4

    Affected versions

    v5.5

    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-2021-32706 | CVE-DB