VULNERABILITY INTELLIGENCE
CVE-2020-8223
CVSS score6.5 MEDIUM
EPSS probability1.47%
CISA KEVNot currently listed
Published2020-10-05
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
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.
Weakness classification
- support@hackerone.com: CWE-269
- nvd@nist.gov: CWE-269
Primary references
- support@hackerone.com — Exploit, Third Party Advisory
- support@hackerone.com
- support@hackerone.com
- support@hackerone.com — Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory