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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…
Medium6.5EPSS 1.5%
- Published
- Updated
- Reserved
- Assigned by
- hackerone
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.
Timeline
ID reserved
By hackerone
- 8 months later
· 8 months later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 1.5% · top 26% of all CVEs (7 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Weakness
Affected products
Nextcloud Server
- affected Fixed in 19.0.1
References (4)
- https://hackerone.com/reports/889243 (opens in a new tab)x_refsource_MISCx_transferred
- https://nextcloud.com/security/advisory/?id=NC-SA-2020-029 (opens in a new tab)x_refsource_MISCx_transferred
- FEDORA-2020-c9863904de (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2020-050aaa14f7 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2020-8223)Record last updated .