CVE-2020-10534

Description

In the GlobalBlocking extension before 2020-03-10 for MediaWiki through 1.34.0, an issue related to IP range evaluation resulted in blocked users re-gaining escalated privileges. This is related to the case in which an IP address is contained in two ranges, one of which is locally disabled.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.33%
Vendor Advisory wikimedia.org Vendor Advisory wikimedia.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://phabricator.wikimedia.org/T229731 vendor advisory
https://gerrit.wikimedia.org/r/#/q/I9cc5fb2c08c78bbd797a5fc6d89f4577c8cc118b patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-10534?
CVE-2020-10534 has been scored as a critical severity vulnerability.
How to fix CVE-2020-10534?
To fix CVE-2020-10534, 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-2020-10534 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-10534 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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