Dorrajaouad

**Name of the Vulnerable Software and Affected Versions** Nextcloud versions 5.5.13 through 5.5.16 Nextcloud versions 6.2.0 through 6.2.2 **Description** An authenticated user can enumerate other users on the same instance. This is possible because sharing restrictions were not effectively applied to the Calendar app's endpoint used for suggesting attendees. **Recommendations** Update to version 5.5.17. Update to version 6.2.3.

**Name of the Vulnerable Software and Affected Versions** Nextcloud versions 4.3.0 through 5.2.6 **Description** A removed collaborator retains unauthorized read access to uploaded respondent files for an affected form. This access is limited to uploaded files for forms where the user previously possessed results access. **Recommendations** Update to version 5.2.7.

Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.9, and 33.0.0 to before 33.0.3, an authentication bypass vulnerability allowed attackers with knowledge of a user's password to circumvent two-factor authentication (2FA) protections. When a user initiated login with valid credentials on a 2FA-enabled account, the system created a temporary session token before enforcing the second factor challenge. This token could be extracted and replayed via HTTP Basic Authentication to gain unauthorized access to authenticated endpoints. It is recommended that the Nextcloud Server is upgraded to 33.0.3 or 32.0.9. It is recommended that the Nextcloud Enterprise Server is upgraded to 33.0.3, 32.0.9, 31.0.14.5, 30.0.17.9 or 29.0.16.16

Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 31.0.0 to before 31.0.12, and 32.0.0 to before 32.0.3, a missing check of a relation allowed authenticated users with access to any file comment, to read the content of all comments. It is recommended that the Nextcloud Server is upgraded to 31.0.12 or 32.0.3. It is recommended that the Nextcloud Enterprise Server is upgraded to 21.0.9.20, 22.2.10.35, 23.0.12.31, 24.0.12.30, 25.0.13.25, 26.0.13.22, 27.1.11.22, 28.0.14.13, 29.0.16.10, 30.0.17.5, 31.0.12 or 32.0.3