CVE-2020-8139

Description

A missing access control check in Nextcloud Server < 18.0.1, < 17.0.4, and < 16.0.9 causes hide-download shares to be downloadable when appending /download to the URL.

Categories

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.61% Top 20%
Vendor Advisory fedoraproject.org Vendor Advisory nextcloud.com
Affected: n/a Nextcloud Server
Published at:
Updated at:

References

Link Tags
https://hackerone.com/reports/788257 permissions required
https://nextcloud.com/security/advisory/?id=NC-SA-2020-015 vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KC6HLX5SG4PZO6Y54D2LFJ4ATG76BKOP/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-8139?
CVE-2020-8139 has been scored as a medium severity vulnerability.
How to fix CVE-2020-8139?
To fix CVE-2020-8139, 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-2020-8139 being actively exploited in the wild?
It is possible that CVE-2020-8139 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-8139?
CVE-2020-8139 affects n/a Nextcloud Server.
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