CVE-2021-31551

Description

An issue was discovered in the PageForms extension for MediaWiki through 1.35.2. Crafted payloads for Token-related query parameters allowed for XSS on certain PageForms-managed MediaWiki pages.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.22%
Third-Party Advisory wikimedia.org 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/T259433 third party advisory
https://gerrit.wikimedia.org/r/q/Ibe68b070ee791cd0c8e7f50eb04ac4e066b1512c issue tracking third party advisory
https://gerrit.wikimedia.org/r/q/I5e0abbc2f80e6bda255b3b32a4df39a7fe7d3793 issue tracking third party advisory
https://gerrit.wikimedia.org/r/q/I20b63bd38779d2ccbe2d86f9879df85ca3b685f6 issue tracking third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-31551?
CVE-2021-31551 has been scored as a medium severity vulnerability.
How to fix CVE-2021-31551?
To fix CVE-2021-31551, 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-2021-31551 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-31551 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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