| Package | Affected versions | Patched versions |
|---|---|---|
| nextcloud server | ≥ 20.0.0, < 20.0.11≥ 21.0.0, < 21.0.3< 19.0.13 | 20.0.1121.0.319.0.13 |
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.
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