Vulnerability Details : CVE-2020-26121

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.
Published 2020-09-27 21:15:13
Updated 2022-01-06 14:18:50
Source MITRE
View at NVD,   CVE.org

Products affected by CVE-2020-26121

Exploit prediction scoring system (EPSS) score for CVE-2020-26121

EPSS FAQ
0.16%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 33 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-26121

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.0
 MEDIUM AV:N/AC:L/Au:N/C:N/I:P/A:N
10.0
2.9
 NIST
7.5
 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
3.9
3.6
 NIST

CWE ids for CVE-2020-26121

  • The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2020-26121

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