CVE-2021-36128
CVSS v3
9.8
CRITICAL
EPSS Score
1.5 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
An issue was discovered in the CentralAuth extension in MediaWiki through 1.36. Autoblocks for CentralAuth-issued suppression blocks are not properly implemented.
Technical details
- Published
- 2021-07-02
Frequently asked questions
What is CVE-2021-36128?
An issue was discovered in the CentralAuth extension in MediaWiki through 1.36. Autoblocks for CentralAuth-issued suppression blocks are not properly implemented.
Is CVE-2021-36128 actively exploited?
Active exploitation of CVE-2021-36128 has not been confirmed. Its EPSS score was 1.5% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-36128?
CVE-2021-36128 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2021-36128 affecting your environment?
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