Auth bypass in MediaWiki
CVE-2021-36132
An issue was discovered in the FileImporter extension in MediaWiki through 1.36. For certain relaxed configurations of the $wgFileImporterRequiredRight variable, it might not validate all appropriate user rights, thus allowing a user with insufficient rights to perform operations (specifically file uploads) that they should not be allowed to perform.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.010 (62.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 62.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
Weakness classification (CWE)
References
- phabricator.wikimedia.org/T280590 (Exploit, Patch, Vendor Advisory)
- gerrit.wikimedia.org/r/q/I8ff2a67abd2c118a3469e4410eac2a451bfa76c3 (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-36132?
- CVE-2021-36132 is a high-severity vulnerability in MediaWiki, classified under Incorrect Authorization. CVSS score: 8.8/10. Published 2021-07-02.
- How severe is CVE-2021-36132?
- High severity. CVSS v3 base score is 8.8 out of 10.