Critical severity · published Jul 2, 2021
CVE-2021-36128
An issue was discovered in the CentralAuth extension in MediaWiki through 1.36
9.8
CVSS
1.5%
EPSS
No
On KEV
Description
An issue was discovered in the CentralAuth extension in MediaWiki through 1.36. Autoblocks for CentralAuth-issued suppression blocks are not properly implemented.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.5% · higher than 74% 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-2021-36128
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-36128
Patch
https://gerrit.wikimedia.org/r/q/I15d14c88a1e30df92c470bc191c4ee573172d4d1
Patch
https://gerrit.wikimedia.org/r/q/I3e65690695313380c798b62edfda726b6e374f89
Exploit
https://phabricator.wikimedia.org/T281972
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