CVSS 3.1
5.3 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NCVE-2021-32703
Medium (5.3). EPSS 1.5% chance of exploitation in the next 30 days.
Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, there was a lack of ratelimiting on the shareinfo endpoint. This may have allowed an attacker to enumerate potentially valid share tokens. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. There are no known workarounds.
Severity
- EPSS
- 1.5% chance of exploitation in the next 30 days; higher than 74% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-307, CWE-799
- Published
- Modified
- Record from
- the NVD, synced
Affected
- fedoraproject:fedora
- nextcloud:nextcloud_server
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-375p-cxxq-gc9p
- https://github.com/nextcloud/server/pull/26945
- https://hackerone.com/reports/1173684
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BVZS26RDME2DYTKET5AECRIZDFUGR2AZ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J63NBVPR2AQCAWRNDOZSGRY5II4WS2CZ/