CVE-2018-1000656

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    CVE-2018-1000656

    Published: 20 Aug 2018Last Modified: 8 Jul 2026

    Summary:

    Details: The Pallets Project flask version Before 0.12.3 contains a CWE-20: Improper Input Validation vulnerability in flask that can result in Large amount of memory usage possibly leading to denial of service. This attack appear to be exploitable via Attacker provides JSON data in incorrect encoding. This vulnerability appears to have been fixed in 0.12.3. NOTE: this may overlap CVE-2019-1010083.

    References: https://lists.debian.org/debian-lts-announce/2019/08/msg00025.html, https://usn.ubuntu.com/4378-1/, https://github.com/pallets/flask/releases/tag/0.12.3, https://github.com/pallets/flask/pull/2691, https://security.netapp.com/advisory/ntap-20190221-0001/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -1a9e58e8c97c47c969736d46410f724f4e834f54

    Affected versions

    0.12.2
    0.12.1
    0.12

    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