CVE-2021-41866

Description

MyBB before 1.8.28 allows stored XSS because the displayed Template Name value in the Admin CP's theme management is not escaped properly.

Category

5.4
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.28%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/mybb/mybb/security/advisories/ third party advisory
https://github.com/mybb/mybb/security/advisories/GHSA-gxhv-r3m5-6qv7 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-41866?
CVE-2021-41866 has been scored as a medium severity vulnerability.
How to fix CVE-2021-41866?
To fix CVE-2021-41866, 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-2021-41866 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-41866 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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