CVE-2020-35591

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    CVE-2020-35591

    Published: 18 Feb 2021Last Modified: 27 Aug 2026

    Summary:

    Details: Pi-hole 5.0, 5.1, and 5.1.1 allows Session Fixation. The application does not generate a new session cookie after the user is logged in. A malicious user is able to create a new session cookie value and inject it to a victim. After the victim logs in, the injected cookie becomes valid, giving the attacker access to the user's account through the active session.

    References: https://discourse.pi-hole.net/c/announcements/5, https://n4nj0.github.io/advisories/pi-hole-multiple-vulnerabilities-i/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 4d25f695267590b61a4061f9bb43448005d99b85
    Fixed -None

    Affected versions

    5.0

    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-2020-35591 | CVE-DB