DEBIAN-CVE-2021-3603

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    DEBIAN-CVE-2021-3603

    Published: 17 Jun 2021Last Modified: 1 Sept 2026
    Upstream:
    CVE-2021-3603

    Summary:

    Details: PHPMailer 6.4.1 and earlier contain a vulnerability that can result in untrusted code being called (if such code is injected into the host project's scope by other means). If the $patternselect parameter to validateAddress() is set to 'php' (the default, defined by PHPMailer::$validator), and the global namespace contains a function called php, it will be called in preference to the built-in validator of the same name. Mitigated in PHPMailer 6.5.0 by denying the use of simple strings as validator function names.

    References: https://security-tracker.debian.org/tracker/CVE-2021-3603

    Affected packages

    Package

    Name: libphp-phpmailer

    Purl: pkg:deb/debian/libphp-phpmailer?arch=source&distro=bookworm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -6.6.3-1

    Affected versions

    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
    DEBIAN-CVE-2021-3603 | CVE-DB