CVE-2021-36128

Public Exploit

Description

An issue was discovered in the CentralAuth extension in MediaWiki through 1.36. Autoblocks for CentralAuth-issued suppression blocks are not properly implemented.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.57%
Vendor Advisory wikimedia.org Vendor Advisory wikimedia.org Vendor Advisory wikimedia.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://phabricator.wikimedia.org/T281972 issue tracking patch vendor advisory exploit
https://gerrit.wikimedia.org/r/q/I3e65690695313380c798b62edfda726b6e374f89 patch vendor advisory
https://gerrit.wikimedia.org/r/q/I15d14c88a1e30df92c470bc191c4ee573172d4d1 patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-36128?
CVE-2021-36128 has been scored as a critical severity vulnerability.
How to fix CVE-2021-36128?
To fix CVE-2021-36128, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-36128 being actively exploited in the wild?
It is possible that CVE-2021-36128 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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