CVE-2021-32726 | Severity.io

Description

Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, webauthn tokens were not deleted after a user has been deleted. If a victim reused an earlier used username, the previous user could gain access to their account. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. There are no known workarounds.

Related CPE's

nextcloud

nextcloud_server

References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6qr9-c846-j8mg

Third Party Advisory

https://github.com/nextcloud/server/pull/27532

Third Party Advisory

https://hackerone.com/reports/1202590

Permissions Required

https://security.gentoo.org/glsa/202208-17

Third Party Advisory