CVE-2020-27621

Public Exploit

Description

The FileImporter extension in MediaWiki through 1.35.0 was not properly attributing various user actions to a specific user's IP address. Instead, for various actions, it would report the IP address of an internal Wikimedia Foundation server by omitting X-Forwarded-For data. This resulted in an inability to properly audit and attribute various user actions performed via the FileImporter extension.

4.3

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.15%

Vendor Advisory wikimedia.org Vendor Advisory wikimedia.org

Affected: n/a n/a

References

Link	Tags
https://phabricator.wikimedia.org/T265810	patch vendor advisory exploit
https://gerrit.wikimedia.org/r/q/I24a240253c7a5c66dd493a68e8c23d95a17e1b21	patch vendor advisory exploit

Frequently Asked Questions

What is the severity of CVE-2020-27621?: CVE-2020-27621 has been scored as a medium severity vulnerability.
How to fix CVE-2020-27621?: To fix CVE-2020-27621, 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-2020-27621 being actively exploited in the wild?: It is possible that CVE-2020-27621 is being exploited or will be exploited in a near future based on public information. 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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