CVE-2021-31547

Description

An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. Its AbuseFilterCheckMatch API reveals suppressed edits and usernames to unprivileged users through the iteration of crafted AbuseFilter rules.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.17%
Third-Party Advisory wikimedia.org 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/T223654 third party advisory
https://gerrit.wikimedia.org/r/q/I3f7dbd8b873d411e37c8c3aac2339bf5ec36907d issue tracking third party advisory
https://gerrit.wikimedia.org/r/q/I4900b1be73323599d74e3164447f81eded094d75 issue tracking third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-31547?
CVE-2021-31547 has been scored as a medium severity vulnerability.
How to fix CVE-2021-31547?
To fix CVE-2021-31547, 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-2021-31547 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-31547 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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