CVE-2021-28676

    Dashboard / Vulnerabilities / CVE-2021-28676

    CVE-2021-28676

    Published: 2 Jun 2021Last Modified: 20 Oct 2026

    Summary:

    Details: An issue was discovered in Pillow before 8.2.0. For FLI data, FliDecode did not properly check that the block advance was non-zero, potentially leading to an infinite loop on load.

    References: https://github.com/python-pillow/Pillow/pull/5377, https://lists.debian.org/debian-lts-announce/2021/07/msg00018.html, https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-28676-fix-fli-dos, https://security.gentoo.org/glsa/202107-33, https://github.com/python-pillow/Pillow/commit/bb6c11fb889e6c11b0ee122b828132ee763b5856, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -e0e353c0ef7516979a9aedce3792596649ce4433

    Affected versions

    8.1.0

    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-2021-28676 | CVE-DB