MGASA-2021-0260

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    MGASA-2021-0260

    Published: 16 Jun 2021Last Modified: 16 Apr 2026
    Upstream:
    CVE-2021-23980

    Summary: Updated python-bleach packages fix a security vulnerability

    Details: It was reported that python-bleach, a whitelist-based HTML-sanitizing library, is prone to a mutation XSS vulnerability in bleach.clean when "svg" or "math" are in the allowed tags, 'p' or "br" are in allowed tags, "style", "title", "noscript", "script", "textarea", "noframes", "iframe", or "xmp" are in allowed tags and 'strip_comments=False' is set (CVE-2021-23980).

    References: https://advisories.mageia.org/MGASA-2021-0260.html, https://bugs.mageia.org/show_bug.cgi?id=28986, https://www.debian.org/security/2021/dsa-4892.en.html, https://github.com/mozilla/bleach/security/advisories/GHSA-vv2x-vrpj-qqpq, https://lists.opensuse.org/archives/list/[email protected]/thread/YFAKMJGUZHUTZ53ZAID6PRVP5MSLXPGV/

    Affected packages

    Package

    Name: python-bleach

    Purl: pkg:rpm/mageia/python-bleach?arch=source&distro=mageia-7

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.1.4-1.1.mga7

    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
    MGASA-2021-0260 | CVE-DB