Vulnerabilities (CVE)

Filtered by vendor Nextcloud Subscribe
Filtered by product Nextcloud Server
Total 175 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2016-9459 2 Nextcloud, Owncloud 2 Nextcloud Server, Owncloud 2025-04-20 4.3 MEDIUM 6.1 MEDIUM
Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 are vulnerable to a log pollution vulnerability potentially leading to a local XSS. The download log functionality in the admin screen is delivering the log in JSON format to the end-user. The file was delivered with an attachment disposition forcing the browser to download the document. However, Firefox running on Microsoft Windows would offer the user to open the data in the browser as an HTML document. Thus any injected data in the log would be executed.
CVE-2017-0890 1 Nextcloud 1 Nextcloud Server 2025-04-20 3.5 LOW 5.4 MEDIUM
Nextcloud Server before 11.0.3 is vulnerable to an inadequate escaping leading to a XSS vulnerability in the search module. To be exploitable a user has to write or paste malicious content into the search dialogue.
CVE-2017-0893 1 Nextcloud 1 Nextcloud Server 2025-04-20 3.5 LOW 5.4 MEDIUM
Nextcloud Server before 9.0.58 and 10.0.5 and 11.0.3 are shipping a vulnerable JavaScript library for sanitizing untrusted user-input which suffered from a XSS vulnerability caused by a behaviour change in Safari 10.1 and 10.2. Note that Nextcloud employs a strict Content-Security-Policy preventing exploitation of this XSS issue on modern web browsers.
CVE-2016-9461 2 Nextcloud, Owncloud 2 Nextcloud Server, Owncloud 2025-04-20 4.0 MEDIUM 4.3 MEDIUM
Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 are not properly verifying edit check permissions on WebDAV copy actions. The WebDAV endpoint was not properly checking the permission on a WebDAV COPY action. This allowed an authenticated attacker with access to a read-only share to put new files in there. It was not possible to modify existing files.
CVE-2017-0886 1 Nextcloud 1 Nextcloud Server 2025-04-20 4.0 MEDIUM 6.5 MEDIUM
Nextcloud Server before 9.0.55 and 10.0.2 suffers from a Denial of Service attack. Due to an error in the application logic an authenticated adversary may trigger an endless recursion in the application leading to a potential Denial of Service.
CVE-2016-9464 1 Nextcloud 1 Nextcloud Server 2025-04-20 4.0 MEDIUM 4.3 MEDIUM
Nextcloud Server before 9.0.54 and 10.0.0 suffers from an improper authorization check on removing shares. The Sharing Backend as implemented in Nextcloud does differentiate between shares to users and groups. In case of a received group share, users should be able to unshare the file to themselves but not to the whole group. The previous API implementation simply unshared the file to all users in the group.
CVE-2017-0894 1 Nextcloud 1 Nextcloud Server 2025-04-20 4.3 MEDIUM 4.3 MEDIUM
Nextcloud Server before 11.0.3 is vulnerable to disclosure of valid share tokens for public calendars due to a logical error. Thus granting an attacker potentially access to publicly shared calendars without knowing the share token.
CVE-2017-0885 1 Nextcloud 1 Nextcloud Server 2025-04-20 4.0 MEDIUM 4.3 MEDIUM
Nextcloud Server before 9.0.55 and 10.0.2 suffers from a error message disclosing existence of file in write-only share. Due to an error in the application logic an adversary with access to a write-only share may enumerate the names of existing files and subfolders by comparing the exception messages.
CVE-2017-0884 1 Nextcloud 1 Nextcloud Server 2025-04-20 4.0 MEDIUM 4.3 MEDIUM
Nextcloud Server before 9.0.55 and 10.0.2 suffers from a creation of folders in read-only folders despite lacking permissions issue. Due to a logical error in the file caching layer an authenticated adversary is able to create empty folders inside a shared folder. Note that this only affects folders and files that the adversary has at least read-only permissions for.
CVE-2017-0887 1 Nextcloud 1 Nextcloud Server 2025-04-20 4.0 MEDIUM 4.3 MEDIUM
Nextcloud Server before 9.0.55 and 10.0.2 suffers from a bypass in the quota limitation. Due to not properly sanitizing values provided by the `OC-Total-Length` HTTP header an authenticated adversary may be able to exceed their configured user quota. Thus using more space than allowed by the administrator.
CVE-2016-9468 2 Nextcloud, Owncloud 2 Nextcloud Server, Owncloud 2025-04-20 5.0 MEDIUM 5.3 MEDIUM
Nextcloud Server before 9.0.54 and 10.0.1 & ownCloud Server before 9.0.6 and 9.1.2 suffer from content spoofing in the dav app. The exception message displayed on the DAV endpoints contained partially user-controllable input leading to a potential misrepresentation of information.
CVE-2016-9463 2 Nextcloud, Owncloud 2 Nextcloud Server, Owncloud 2025-04-20 6.8 MEDIUM 8.1 HIGH
Nextcloud Server before 9.0.54 and 10.0.1 & ownCloud Server before 9.1.2, 9.0.6, and 8.2.9 suffer from SMB User Authentication Bypass. Nextcloud/ownCloud include an optional and not by default enabled SMB authentication component that allows authenticating users against an SMB server. This backend is implemented in a way that tries to connect to a SMB server and if that succeeded consider the user logged-in. The backend did not properly take into account SMB servers that have any kind of anonymous auth configured. This is the default on SMB servers nowadays and allows an unauthenticated attacker to gain access to an account without valid credentials. Note: The SMB backend is disabled by default and requires manual configuration in the Nextcloud/ownCloud config file. If you have not configured the SMB backend then you're not affected by this vulnerability.
CVE-2016-7419 2 Nextcloud, Owncloud 2 Nextcloud Server, Owncloud 2025-04-12 3.5 LOW 5.4 MEDIUM
Cross-site scripting (XSS) vulnerability in share.js in the gallery application in ownCloud Server before 9.0.4 and Nextcloud Server before 9.0.52 allows remote authenticated users to inject arbitrary web script or HTML via a crafted directory name.
CVE-2024-52518 1 Nextcloud 1 Nextcloud Server 2025-01-23 N/A 4.4 MEDIUM
Nextcloud Server is a self hosted personal cloud system. After an attacker got access to the session of a user or administrator, the attacker would be able to create, change or delete external storages without having to confirm the password. It is recommended that the Nextcloud Server is upgraded to 28.0.12, 29.0.9 or 30.0.2.
CVE-2024-52519 1 Nextcloud 1 Nextcloud Server 2025-01-23 N/A 2.7 LOW
Nextcloud Server is a self hosted personal cloud system. The OAuth2 client secrets were stored in a recoverable way, so that an attacker that got access to a backup of the database and the Nextcloud config file, would be able to decrypt them. 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.
CVE-2024-52521 1 Nextcloud 1 Nextcloud Server 2025-01-23 N/A 2.6 LOW
Nextcloud Server is a self hosted personal cloud system. MD5 hashes were used to check background jobs for their uniqueness. This increased the chances of a background job with arguments falsely being identified as already existing and not be queued for execution. By changing the Hash to SHA256 the probability was heavily decreased. It is recommended that the Nextcloud Server is upgraded to 28.0.10, 29.0.7 or 30.0.0.
CVE-2024-52525 1 Nextcloud 1 Nextcloud Server 2025-01-23 N/A 1.8 LOW
Nextcloud Server is a self hosted personal cloud system. Under certain conditions the password of a user was stored unencrypted in the session data. The session data is encrypted before being saved in the session storage (Redis or disk), but it would allow a malicious process that gains access to the memory of the PHP process, to get access to the cleartext password of the user. It is recommended that the Nextcloud Server is upgraded to 28.0.12, 29.0.9 or 30.0.2.
CVE-2024-52517 1 Nextcloud 1 Nextcloud Server 2025-01-06 N/A 4.6 MEDIUM
Nextcloud Server is a self hosted personal cloud system. After storing "Global credentials" on the server, 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 28.0.11, 29.0.8 or 30.0.1 and Nextcloud Enterprise Server is upgraded to 25.0.13.13, 26.0.13.9, 27.1.11.9, 28.0.11, 29.0.8 or 30.0.1.
CVE-2024-52516 1 Nextcloud 1 Nextcloud Server 2025-01-06 N/A 3.0 LOW
Nextcloud Server is a self hosted personal cloud system. When a server is configured to only allow sharing with users that are in ones own groups, after a user was removed from a group, previously shared items were not unshared. It is recommended that the Nextcloud Server is upgraded to 22.2.11 or 23.0.11 or 24.0.6 and Nextcloud Enterprise Server is upgraded to 22.2.11 or 23.0.11 or 24.0.6.
CVE-2024-37884 1 Nextcloud 1 Nextcloud Server 2024-11-21 N/A 3.5 LOW
Nextcloud Server is a self hosted personal cloud system. A malicious user was able to send delete requests for old versions of files they only got shared with read permissions. It is recommended that the Nextcloud Server is upgraded to 26.0.12 or 27.1.7 or 28.0.3 and that the Nextcloud Enterprise Server is upgraded to 26.0.12 or 27.1.7 or 28.0.3.