CVE-2021-42045

Description

An issue was discovered in SecurePoll in the Growth extension in MediaWiki through 1.36.2. Simple polls allow users to create alerts by changing their User-Agent HTTP header and submitting a vote.

Category

5.4
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 1.20% Top 25%
Vendor Advisory wikimedia.org Vendor Advisory wikimedia.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://phabricator.wikimedia.org/T289385 vendor advisory
https://gerrit.wikimedia.org/r/q/I4f04083cd00884d3b85245460774c81c7639a578 patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-42045?
CVE-2021-42045 has been scored as a medium severity vulnerability.
How to fix CVE-2021-42045?
To fix CVE-2021-42045, 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-2021-42045 being actively exploited in the wild?
It is possible that CVE-2021-42045 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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