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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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Jul 12, 2021 |
| Gentoo Linux | — | Upgrade www-apps/nextcloud. | Aug 11, 2022 | Jul 12, 2021 |
| Suse | — | Upgrade nextcloudUpgrade nextcloud-apache | Jul 22, 2021 | Jul 12, 2021 |
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