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CVE-2020-8223 Details

Description

A logic error in Nextcloud Server 19.0.0 caused a privilege escalation allowing malicious users to reshare with higher permissions than they got assigned themselves.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://hackerone.com/reports/889243	CVE	ExploitThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KC6HLX5SG4PZO6Y54D2LFJ4ATG76BKOP/	CVE
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T7FX3O6SJE2S52I2HAA4DSTUIISP5BNA/	CVE
https://nextcloud.com/security/advisory/?id=NC-SA-2020-029	CVE	Vendor Advisory
https://hackerone.com/reports/889243	[email protected]	ExploitThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KC6HLX5SG4PZO6Y54D2LFJ4ATG76BKOP/	[email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T7FX3O6SJE2S52I2HAA4DSTUIISP5BNA/	[email protected]
https://nextcloud.com/security/advisory/?id=NC-SA-2020-029	[email protected]	Vendor Advisory

see all 8 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-269	Improper Privilege Management	[email protected]
CWE-269	Improper Privilege Management	[email protected]

Affected Products

Product	Versions
nextcloud nextcloud server	19.0.0 -
CPE cpe:2.3:a:nextcloud:nextcloud_server:19.0.0:-:::::: Remediation No remediation found in references.
fedoraproject fedora	32 33
CPE cpe:2.3:o:fedoraproject:fedora:32:::::::* cpe:2.3:o:fedoraproject:fedora:33:::::::* Remediation No remediation found in references.

Change History

8 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Nov 7, 2023	CVE Modified	[email protected]
Jan 1, 2022	Modified Analysis	[email protected]
Oct 26, 2020	CVE Modified	[email protected]
Oct 19, 2020	CVE Modified	[email protected]
Oct 13, 2020	Initial Analysis	[email protected]