CVE-2021-46150

Public Exploit

Description

An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. Special:CheckUserLog allows CheckUser XSS because of date mishandling, as demonstrated by an XSS payload in MediaWiki:October.

Category

4.8
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.17%
Third-Party Advisory wikimedia.org Third-Party Advisory wikimedia.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://phabricator.wikimedia.org/T292795 third party advisory exploit
https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/CheckUser/+/79c2c49a18f96b159258958feca90fce964c350a third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-46150?
CVE-2021-46150 has been scored as a medium severity vulnerability.
How to fix CVE-2021-46150?
To fix CVE-2021-46150, 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-2021-46150 being actively exploited in the wild?
It is possible that CVE-2021-46150 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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