High severity · published Jul 2, 2021
CVE-2021-36125
An issue was discovered in the CentralAuth extension in MediaWiki through 1.36
7.5
CVSS
1%
EPSS
No
On KEV
Description
An issue was discovered in the CentralAuth extension in MediaWiki through 1.36. The Special:GlobalRenameRequest page is vulnerable to infinite loops and denial of service attacks when a user's current username is beyond an arbitrary maximum configuration value (MaxNameChars).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 64% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ME
Mediawiki · Mediawiki
through 1.36 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-36125
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-36125
Patch
https://gerrit.wikimedia.org/r/q/I97d8b3236b5abed8ba9a9c4d3ab5050c2e782c22
Exploit
https://phabricator.wikimedia.org/T260865
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