synced 13 MIN AGO
01 Record

CVE-2020-8223

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.

UnratedPUBLISHEDCNA: hackerone
CNA base scoreUnratedNo CNA CVSS vector
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02 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.

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
1.46% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 73.4% of scored records. A rank, not a probability.
NVD base score
6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2020-10-05 13:16Z6 YR AGO
Last updated
2024-08-04 09:56Z2 YR AGO
Reserved
2020-01-28
Assigning CNA
hackerone
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-269Improper Privilege ManagementClass
Data version
5.1
Document digest
09408534f68d073306e9f87457ad93a4515d8e4fee6f55440b01d8dd1ab13e32

05 Affected products

VendorProductVersionsPlatforms
n/aNextcloud ServerFixed in 19.0.1—

06 References