Vulnerability Details : CVE-2020-8121
Potential exploit
A bug in Nextcloud Server 14.0.4 could expose more data in reshared link shares than intended by the sharer.
Vulnerability category: BypassGain privilege
Products affected by CVE-2020-8121
- cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
- cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
- cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-8121
0.44%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 62 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-8121
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.5
|
MEDIUM | AV:N/AC:L/Au:S/C:P/I:P/A:N |
8.0
|
4.9
|
NIST | |
8.1
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
2.8
|
5.2
|
NIST |
CWE ids for CVE-2020-8121
-
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.Assigned by: support@hackerone.com (Secondary)
-
The product exposes a resource to the wrong control sphere, providing unintended actors with inappropriate access to the resource.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-8121
-
https://nextcloud.com/security/advisory/?id=NC-SA-2019-003
advisory – NextcloudVendor Advisory
-
https://hackerone.com/reports/452854
#452854 Expired reshare links allow access to all files in shareExploit;Third Party Advisory
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