CVE-2020-35478

    Dashboard / Vulnerabilities / CVE-2020-35478

    CVE-2020-35478

    Published: 18 Dec 2020Last Modified: 8 Jul 2026

    Summary:

    Details: MediaWiki before 1.35.1 allows XSS via BlockLogFormatter.php. MediaWiki:blanknamespace potentially can be output as raw HTML with SCRIPT tags via LogFormatter::makePageLink(). This affects MediaWiki 1.33.0 and later.

    References: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STT5Z4A3BCXVH3WIPICWU2FP4IPIMUPC/, https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html, https://phabricator.wikimedia.org/T268938

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- a1742c4f4b2c331a44ba1d80bf1431ddfb9ef678
    Fixed -3e26b5ff1468f98cf306575d125b29a6645bf2ea

    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
    CVE-2020-35478 | CVE-DB