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CVE-2022-39330

Database resource exhaustion for logged-in users via sharee recommendations with circles

Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform. Nextcloud Server prior to versions 23.0.10 and 24.0.6 and Nextcloud Enterprise Server prior to versions 22.2.10, 23.0.10, and 24.0.6 are vulnerable to a logged-in attacker slowing down the system by generating a lot of database/cpu load. Nextcloud Server versions 23.0.10 and 24.0.6 and Nextcloud Enterprise Server versions 22.2.10, 23.0.10, and 24.0.6 contain patches for this issue. As a workaround, disable the Circles app.

CVSS 3.1 · 4.8 Medium EPSS 1.1% KEV · Not listed
Vendors
Nextcloud
Products
Nextcloud Enterprise Server Nextcloud Server
CVE-2022-39329

Profile of disabled user stays accessible

Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform. Nextcloud Server and Nextcloud Enterprise Server prior to versions 23.0.9 and 24.0.5 are vulnerable to exposure of information that cannot be controlled by administrators without direct database access. Versions 23.0.9 and 24.0.5 contains patches for this issue. No known workarounds are available.

CVSS 3.1 · 3.5 Low EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Nextcloud Enterprise Server Nextcloud Server
CVE-2025-66510

Nextcloud Server Contacts Search allowed users to retrieve contact information of other users beyond their contact list

Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server prior to 31.0.10 and 32.0.1 and Nextcloud Enterprise Server prior to 28.0.14.11, 29.0.16.8, 30.0.17.3, and 31.0.10, contacts search allowed to retrieve personal data of other users (emails, names, identifiers) without proper access control. This allows an authenticated user to retrieve information about accounts that are not related or added as contacts.

CVSS 3.1 · 4.5 Medium EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Nextcloud Nextcloud Enterprise Server Nextcloud Server and 1 more
CVE-2025-66552

Nextcloud Server admin_audit does not log all actions on files in groupfolders

Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server and Enterprise Server prior to 30.0.9 and 31.0.1, incorrect path handling with groupfolders caused the admin_audit app to not properly log all actions on files and folders inside groupfolders. This vulnerability is fixed in Nextcloud Server and Enterprise Server prior to 30.0.9 and 31.0.1.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Nextcloud Nextcloud Enterprise Server Nextcloud Server and 1 more
CVE-2025-66512

Nextcloud Server vulnerable to XSS in SVG images when opened outside of Nextcloud

Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server and Server Enterprise prior to 31.0.12 and 32.0.3, a missing sanitization allowed malicious users to circumvent the content security policy when a malicious user manages to trick a user it viewing an uploaded SVG outside of the Nextcloud Servers web page.

CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Nextcloud Nextcloud Enterprise Server Nextcloud Server and 1 more
CVE-2025-66547

Nextcloud Server users can modify tags on files that do not belong to them

Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server and Enterprise Server prior to 31.0.1, non-privileged users can modify tags on files they should not have access to via bulk tagging. This vulnerability is fixed in 31.0.1.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Nextcloud Nextcloud Enterprise Server Nextcloud Server and 1 more
CVE-2024-52523

Nextcloud Server Custom defined credentials of external storages are sent back to the frontend

Nextcloud Server is a self hosted personal cloud system. After setting up a user or administrator defined external storage with fixed credentials, the API returns them and adds them into the frontend again, allowing to read them in plain text when an attacker already has access to an active session of a user. It is recommended that the Nextcloud Server is upgraded to 28.0.12, 29.0.9 or 30.0.2 and Nextcloud Enterprise Server is upgraded to 25.0.13.14, 26.0.13.10, 27.1.11.10, 28.0.12, 29.0.9 or 30.0.2.

CVSS 3.1 · 4.6 Medium EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Nextcloud Enterprise Server Nextcloud Server
CVE-2024-52514

Nextcloud Server allows users to copy folder that contain files that are blocked by the files access control

Nextcloud Server is a self hosted personal cloud system. After a user received a share with some files inside being blocked by the files access control, the user would still be able to copy the intermediate folder inside Nextcloud allowing them to afterwards potentially access the blocked files depending on the user access control rules. It is recommended that the Nextcloud Server is upgraded to 27.1.9, 28.0.5 or 29.0.0 and Nextcloud Enterprise Server is upgraded to 21.0.9.18, 22.2.10.23, 23.0.12.18, 24.0.12.14, 25.0.13.9, 26.0.13.3, 27.1.9, 28.0.5 or 29.0.0.

CVSS 3.1 · 4.1 Medium EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Nextcloud Enterprise Server Nextcloud Server
CVE-2024-52520

Nextcloud Server's link reference provider can be tricked into downloading bigger files than intended

Nextcloud Server is a self hosted personal cloud system. Due to a pre-flighted HEAD request, the link reference provider could be tricked into downloading bigger websites than intended, to find open-graph data. It is recommended that the Nextcloud Server is upgraded to 28.0.10 or 29.0.7 and Nextcloud Enterprise Server is upgraded to 27.1.11.8, 28.0.10 or 29.0.7.

CVSS 3.1 · 5.7 Medium EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Nextcloud Enterprise Server Nextcloud Server
CVE-2022-36074

Authentication headers exposed on by Nextcloud Server

Nextcloud server is an open source personal cloud product. Affected versions of this package are vulnerable to Information Exposure which fails to strip the Authorization header on HTTP downgrade. This can lead to account access exposure and compromise. It is recommended that the Nextcloud Server is upgraded to 23.0.7 or 24.0.3. It is recommended that the Nextcloud Enterprise Server is upgraded to 22.2.11, 23.0.7 or 24.0.3. There are no known workarounds for this issue.

CVSS 3.1 · 6.4 Medium EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Nextcloud Enterprise Server Nextcloud Server
CVE-2022-39211

Server-Side Request Forgery (SSRF) via potential filter bypass in Nextcloud Server

Nextcloud server is an open source personal cloud platform. In affected versions it was found that locally running webservices can be found and requested erroneously. It is recommended that the Nextcloud Server is upgraded to 23.0.8 or 24.0.4. It is recommended that the Nextcloud Enterprise Server is upgraded to 22.2.10.4, 23.0.8 or 24.0.4. There are no known workarounds for this issue.

CVSS 3.1 · 3 Low EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Nextcloud Enterprise Server Nextcloud Server
CVE-2022-39346

Missing length validation of user displayname in nextcloud server

Nextcloud server is an open source personal cloud server. Affected versions of nextcloud server did not properly limit user display names which could allow a malicious users to overload the backing database and cause a denial of service. It is recommended that the Nextcloud Server is upgraded to 22.2.10, 23.0.7 or 24.0.3. There are no known workarounds for this issue.

CVSS 3.1 · 3.5 Low EPSS 1.1% KEV · Not listed
Vendors
Fedoraproject Nextcloud
Products
Fedora Nextcloud Enterprise Server Nextcloud Server
CVE-2022-39364

Exception logging in Sharepoint app reveals clear-text connection details

Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform. In Nextcloud Server prior to versions 23.0.9 and 24.0.5 and Nextcloud Enterprise Server prior to versions 22.2.10.5, 23.0.9, and 24.0.5 an attacker reading `nextcloud.log` may gain knowledge of credentials to connect to a SharePoint service. Nextcloud Server versions 23.0.9 and 24.0.5 and Nextcloud Enterprise Server versions 22.2.10.5, 23.0.9, and 24.0.5 contain a patch for this issue. As a workaround, set `zend.exception_ignore_args = On` as an option in `php.ini`.

CVSS 3.1 · 4 Medium EPSS < 1% KEV · Not listed
Vendors
Nextcloud
Products
Nextcloud Enterprise Server Nextcloud Server