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    CVE-2021-44858

    An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. It is possible to use action=edit&undo= followed by action=mcrundo and action=mcrrestore to view private pages on a private wiki that has at least one page set in $wgWhitelistRead.

    Published:Dec 16, 2021
    Last Modified:Nov 21, 2024
    EPS:Dec 20, 2021
    EPSS Score:0.00304
    CVSS Score:7.5

    Affected Products

    Vendor
    Mediawiki
    Product
    Mediawiki

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-276 Incorrect Default Permissions

    Related CVEs

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    CVE-2026-34094 (CVSS 2) — Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files include…
    CVE-2026-34093 (CVSS 1.1) — Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. …
    CVE-2026-34092 (CVSS 2.1) — Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. …
    CVE-2026-34091 (CVSS 5.5) — Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. T…
    CVE-2026-34088 (CVSS 1.3) — Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. T…
    CVE-2026-34087 (CVSS 5.1) — Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation OATHAuth. Th…
    CVE-2025-67481 (CVSS 0) — Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in W…
    CVE-2025-67483 (CVSS 0) — Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in W…
    CVE-2025-67484 (CVSS 0) — Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/…

    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