Access Control Flaw in Nextcloud Server Affects Multiple Versions
CVE-2020-8139

6.5MEDIUM

Key Information:

Vendor

Nextcloud
Status
Nextcloud Server
Vendor
CVE Published:
20 March 2020

What is CVE-2020-8139?

An access control vulnerability in Nextcloud Server allows users to download files that should be restricted. Specifically, versions prior to 18.0.1, 17.0.4, and 16.0.9 improperly handle download permissions, enabling unauthorized access to hide-download shares by simply appending '/download' to the URL. This flaw may expose sensitive information and poses a risk to data security.

Affected Version(s)

Nextcloud Server Fixed in 18.0.1, 17.0.4, and 16.0.9

References

https://hackerone.com/reports/788257
x_refsource_MISC
https://nextcloud.com/security/advisory/?id=NC-SA-2020-015
x_refsource_CONFIRM
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisoryx_refsource_FEDORA

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.