CVE-2020-8294

Description

A missing link validation in Nextcloud Server before 20.0.2, 19.0.5, 18.0.11 allows execution of a stored XSS attack using Internet Explorer when saving a 'javascript:' URL in markdown format.

Category

5.4
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.39%
Vendor Advisory nextcloud.com
Affected: n/a Nextcloud Server
Published at:
Updated at:

References

Link Tags
https://hackerone.com/reports/1023787 third party advisory permissions required
https://nextcloud.com/security/advisory/?id=NC-SA-2021-002 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-8294?
CVE-2020-8294 has been scored as a medium severity vulnerability.
How to fix CVE-2020-8294?
To fix CVE-2020-8294, 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-2020-8294 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-8294 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.
What software or system is affected by CVE-2020-8294?
CVE-2020-8294 affects n/a Nextcloud Server.
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