VULNERABILITY INTELLIGENCE
CVE-2020-26121
CVSS score7.5 HIGH
EPSS probability1.28%
CISA KEVNot currently listed
Published2020-09-27
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
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.
Weakness classification
- nvd@nist.gov: CWE-863
Primary references
- cve@mitre.org — Vendor Advisory
- cve@mitre.org — Patch, Vendor Advisory
- cve@mitre.org
- cve@mitre.org — Issue Tracking, Patch, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Patch, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Patch, Vendor Advisory
