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MediaWiki: Incorrect Authorization (CVE-2020-26121)

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MediaWiki: Incorrect Authorization (CVE-2020-26121)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
Published
09/27/2020
Created
10/09/2020
Added
10/08/2020
Modified
11/08/2023

Description

An issue was discovered in the FileImporter extension for MediaWiki before 1.34.4. An attacker can import a file even when the target page is protected against "page creation" and the attacker should not be able to create it. This occurs because of a mishandled distinction between an upload restriction and a create restriction. An attacker cannot leverage this to overwrite anything, but can leverage this to force a wiki to have a page with a disallowed title.

Solution(s)

  • mediawiki-upgrade-1_34_4

References

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