CVE-2018-11386

    Dashboard / Vulnerabilities / CVE-2018-11386

    CVE-2018-11386

    Published: 13 Jun 2018Last Modified: 7 Aug 2026

    Summary:

    Details: An issue was discovered in the HttpFoundation component in Symfony 2.7.x before 2.7.48, 2.8.x before 2.8.41, 3.3.x before 3.3.17, 3.4.x before 3.4.11, and 4.0.x before 4.0.11. The PDOSessionHandler class allows storing sessions on a PDO connection. Under some configurations and with a well-crafted payload, it was possible to do a denial of service on a Symfony application without too much resources.

    References: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G4XNBMFW33H47O5TZGA7JYCVLDBCXAJV/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UBQK7JDXIELADIPGZIOUCZKMAJM5LSBW/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WU5N2TZFNGXDGMXMPP7LZCWTFLENF6WH/, https://symfony.com/blog/cve-2018-11386-denial-of-service-when-using-pdosessionhandler, https://www.debian.org/security/2018/dsa-4262

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- de2f3d51160791ef254010953dbde178fee9845f
    Fixed -682c866cd03064d74c884ba67ff0db212dba5575

    Affected versions

    v4.0.10
    v4.0.9
    v4.0.8
    v4.0.7
    v4.0.6
    v4.0.5
    v4.0.4
    v4.0.3
    v4.0.2
    v4.0.1
    v4.0.0-RC2
    v4.0.0

    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-2018-11386 | CVE-DB