GHSA-m9mq-p2f9-cfqv

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    GHSA-m9mq-p2f9-cfqv

    Published: 4 Jan 2019Last Modified: 16 Feb 2025

    Summary: Bleach URI Scheme Restriction Bypass

    Details: An issue was discovered in Bleach 2.1.x before 2.1.3. Attributes that have URI values weren't properly sanitized if the values contained character entities. Using character entities, it was possible to construct a URI value with a scheme that was not allowed that would slide through unsanitized.

    References: https://nvd.nist.gov/vuln/detail/CVE-2018-7753, https://github.com/mozilla/bleach/commit/c5df5789ec3471a31311f42c2d19fc2cf21b35ef, https://bugs.debian.org/892252, https://github.com/mozilla/bleach, https://github.com/mozilla/bleach/releases/tag/v2.1.3, https://github.com/pypa/advisory-database/tree/main/vulns/bleach/PYSEC-2018-51.yaml

    Affected packages

    Package

    Name: bleach

    Purl: pkg:pypi/bleach

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 2.1.0
    Fixed -2.1.3

    Affected versions

    2.1
    2.1.1
    2.1.2

    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