Vulnerabilities (CVE)

Filtered by vendor Nextcloud Subscribe
Filtered by product Nextcloud Server
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2023-49791 1 Nextcloud 1 Nextcloud Server 2024-01-03 N/A 5.4 MEDIUM
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. In Nextcloud Server prior to versions 26.0.9 and 27.1.4; as well as Nextcloud Enterprise Server prior to versions 23.0.12.13, 24.0.12.9, 25.0.13.4, 26.0.9, and 27.1.4; when an attacker manages to get access to an active session of another user via another way, they could delete and modify workflows by sending calls directly to the API bypassing the password confirmation shown in the UI. Nextcloud Server versions 26.0.9 and 27.1.4 and Nextcloud Enterprise Server versions 23.0.12.13, 24.0.12.9, 25.0.13.4, 26.0.9, and 27.1.4 contain a patch for this issue. No known workarounds are available.
CVE-2023-48304 1 Nextcloud 1 Nextcloud Server 2023-12-01 N/A 4.3 MEDIUM
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.11, 26.0.6, and 27.1.0 of Nextcloud Server and starting in version 22.0.0 and prior to versions 22.2.10.16, 23.0.12.11, 24.0.12.7, 25.0.11, 26.0.6, and 27.1.0 of Nextcloud Enterprise Server, an attacker could enable and disable the birthday calendar for any user on the same server. Nextcloud Server 25.0.11, 26.0.6, and 27.1.0 and Nextcloud Enterprise Server 22.2.10.16, 23.0.12.11, 24.0.12.7, 25.0.11, 26.0.6, and 27.1.0 contain patches for this issue. No known workarounds are available.
CVE-2023-48301 1 Nextcloud 1 Nextcloud Server 2023-11-30 N/A 5.4 MEDIUM
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.13, 26.0.8, and 27.1.3 of Nextcloud Server and Nextcloud Enterprise Server, an attacker could insert links into circles name that would be opened when clicking the circle name in a search filter. Nextcloud Server and Nextcloud Enterprise Server versions 25.0.13, 26.0.8, and 27.1.3 contain a fix for this issue. As a workaround, disable app circles.
CVE-2023-48302 1 Nextcloud 1 Nextcloud Server 2023-11-30 N/A 5.4 MEDIUM
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.13, 26.0.8, and 27.1.3 of Nextcloud Server and Nextcloud Enterprise Server, when a user is tricked into copy pasting HTML code without markup (Ctrl+Shift+V) the markup will actually render. Nextcloud Server and Nextcloud Enterprise Server versions 25.0.13, 26.0.8, and 27.1.3 contain a fix for this issue. As a workaround, disable app text.
CVE-2023-48305 1 Nextcloud 1 Nextcloud Server 2023-11-30 N/A 4.4 MEDIUM
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.11, 26.0.6, and 27.1.0 of Nextcloud Server and Nextcloud Enterprise Server, when the log level was set to debug, the user_ldap app logged user passwords in plaintext into the log file. If the log file was then leaked or shared in any way the users' passwords would be leaked. Nextcloud Server and Nextcloud Enterprise Server versions 25.0.11, 26.0.6, and 27.1.0 contain a patch for this issue. As a workaround, change config setting `loglevel` to `1` or higher (should always be higher than 1 in production environments).
CVE-2023-39952 1 Nextcloud 1 Nextcloud Server 2023-08-16 N/A 6.5 MEDIUM
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 22.0.0 and prior to versions 22.2.10.13, 23.0.12.8, 24.0.12.4, 25.0.8, 26.0.3, and 27.0.1, a user can access files inside a subfolder of a groupfolder accessible to them, even if advanced permissions would block access to the subfolder. Nextcloud Server versions 25.0.8, 26.0.3, and 27.0.1 and Nextcloud Enterprise Server versions 22.2.10.13, 23.0.12.8, 24.0.12.4, 25.0.8, 26.0.3, and 27.0.1 contain a patch for this issue. No known workarounds are available.
CVE-2023-39961 1 Nextcloud 1 Nextcloud Server 2023-08-16 N/A 4.3 MEDIUM
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 24.0.4 and prior to versions 25.0.9, 26.0.4, and 27.0.1, when a folder with images or an image was shared without download permissions, the user could add the image inline into a text file and download it. Nextcloud Server versions 25.0.9, 26.0.4, and 27.0.1 and Nextcloud Enterprise Server versions 24.0.12.5, 25.0.9, 26.0.4, and 27.0.1 contain a patch for this issue. No known workarounds are available.
CVE-2023-39959 1 Nextcloud 1 Nextcloud Server 2023-08-16 N/A 5.3 MEDIUM
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.9, 26.0.4, and 27.0.1, unauthenticated users could send a DAV request which reveals whether a calendar or an address book with the given identifier exists for the victim. Nextcloud Server versions 25.0.9, 26.0.4, and 27.0.1 and Nextcloud Enterprise Server versions 25.0.9, 26.0.4, and 27.0.1 contain a patch for this issue. No known workarounds are available.
CVE-2023-39958 1 Nextcloud 1 Nextcloud Server 2023-08-16 N/A 5.3 MEDIUM
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 22.0.0 and prior to versions 22.2.10.13, 23.0.12.8, 24.0.12.5, 25.0.9, 26.0.4, and 27.0.1, missing protection allows an attacker to brute force the client secrets of configured OAuth2 clients. Nextcloud Server versions 25.0.9, 26.0.4, and 27.0.1 and Nextcloud Enterprise Server versions 22.2.10.13, 23.0.12.8, 24.0.12.5, 25.0.9, 26.0.4, and 27.0.1 contain a patch for this issue. No known workarounds are available.
CVE-2020-8139 2 Fedoraproject, Nextcloud 2 Fedora, Nextcloud Server 2022-06-04 4.0 MEDIUM 6.5 MEDIUM
A missing access control check in Nextcloud Server < 18.0.1, < 17.0.4, and < 16.0.9 causes hide-download shares to be downloadable when appending /download to the URL.
CVE-2022-29163 1 Nextcloud 1 Nextcloud Server 2022-06-02 4.0 MEDIUM 4.3 MEDIUM
Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform. Prior to versions 22.2.6 and 23.0.3, a user can create a link that is not password protected even if the administrator requires links to be password protected. Versions 22.2.6 and 23.0.3 contain a patch for this issue. There are currently no known workarounds.
CVE-2020-8150 1 Nextcloud 1 Nextcloud Server 2022-05-24 1.9 LOW 4.1 MEDIUM
A cryptographic issue in Nextcloud Server 19.0.1 allowed an attacker to downgrade the encryption scheme and break the integrity of encrypted files.
CVE-2022-24889 1 Nextcloud 1 Nextcloud Server 2022-05-06 4.3 MEDIUM 4.3 MEDIUM
Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform. Prior to versions 21.0.8, 22.2.4, and 23.0.1, it is possible to trick administrators into enabling "recommended" apps for the Nextcloud server that they do not need, thus expanding their attack surface unnecessarily. This issue is fixed in versions 21.0.8 , 22.2.4, and 23.0.1.
CVE-2022-24888 1 Nextcloud 1 Nextcloud Server 2022-05-06 5.0 MEDIUM 4.3 MEDIUM
Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform. Prior to versions 20.0.14.4, 21.0.8, 22.2.4, and 23.0.1, it is possible to create files and folders that have leading and trailing \n, \r, \t, and \v characters. The server rejects files and folders that have these characters in the middle of their names, so this might be an opportunity for injection. This issue is fixed in versions 20.0.14.4, 21.0.8, 22.2.4, and 23.0.1. There are currently no known workarounds.
CVE-2019-15624 3 Nextcloud, Opensuse, Suse 3 Nextcloud Server, Backports, Suse Linux Enterprise Server 2022-01-01 4.0 MEDIUM 4.9 MEDIUM
Improper Input Validation in Nextcloud Server 15.0.7 allows group admins to create users with IDs of system folders.
CVE-2020-8223 2 Fedoraproject, Nextcloud 2 Fedora, Nextcloud Server 2022-01-01 3.5 LOW 6.5 MEDIUM
A logic error in Nextcloud Server 19.0.0 caused a privilege escalation allowing malicious users to reshare with higher permissions than they got assigned themselves.
CVE-2020-8296 2 Fedoraproject, Nextcloud 2 Fedora, Nextcloud Server 2022-01-01 4.6 MEDIUM 6.7 MEDIUM
Nextcloud Server prior to 20.0.0 stores passwords in a recoverable format even when external storage is not configured.
CVE-2021-22878 2 Fedoraproject, Nextcloud 2 Fedora, Nextcloud Server 2022-01-01 3.5 LOW 4.8 MEDIUM
Nextcloud Server prior to 20.0.6 is vulnerable to reflected cross-site scripting (XSS) due to lack of sanitization in `OC.Notification.show`.
CVE-2020-8118 3 Nextcloud, Novell, Opensuse 3 Nextcloud Server, Suse Linux Enterprise Server, Backports Sle 2021-12-22 4.0 MEDIUM 5.0 MEDIUM
An authenticated server-side request forgery in Nextcloud server 16.0.1 allowed to detect local and remote services when adding a new subscription in the calendar application.
CVE-2019-5451 1 Nextcloud 1 Nextcloud Server 2021-11-03 2.1 LOW 4.6 MEDIUM
Bypass lock protection in the Nextcloud Android app prior to version 3.6.1 allows accessing the files when repeatedly opening and closing the app in a very short time.
CVE-2019-15623 3 Nextcloud, Opensuse, Suse 3 Nextcloud Server, Backports Sle, Package Hub 2021-10-29 5.0 MEDIUM 5.3 MEDIUM
Exposure of Private Information in Nextcloud Server 16.0.1 causes the server to send it's domain and user IDs to the Nextcloud Lookup Server without any further data when the Lookup server is disabled.
CVE-2021-32703 2 Fedoraproject, Nextcloud 2 Fedora, Nextcloud Server 2021-09-20 5.0 MEDIUM 5.3 MEDIUM
Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, there was a lack of ratelimiting on the shareinfo endpoint. This may have allowed an attacker to enumerate potentially valid share tokens. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. There are no known workarounds.
CVE-2021-32678 2 Fedoraproject, Nextcloud 2 Fedora, Nextcloud Server 2021-09-20 5.0 MEDIUM 5.3 MEDIUM
Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.0.11, and 21.0.3, ratelimits are not applied to OCS API responses. This affects any OCS API controller (`OCSController`) using the `@BruteForceProtection` annotation. Risk depends on the installed applications on the Nextcloud Server, but could range from bypassing authentication ratelimits or spamming other Nextcloud users. The vulnerability is patched in versions 19.0.13, 20.0.11, and 21.0.3. No workarounds aside from upgrading are known to exist.
CVE-2021-32657 1 Nextcloud 1 Nextcloud Server 2021-06-11 4.0 MEDIUM 4.3 MEDIUM
Nextcloud Server is a Nextcloud package that handles data storage. In versions of Nextcloud Server prior to 10.0.11, 20.0.10, and 21.0.2, a malicious user may be able to break the user administration page. This would disallow administrators to administrate users on the Nextcloud instance. The vulnerability is fixed in versions 19.0.11, 20.0.10, and 21.0.2. As a workaround, administrators can use the OCC command line tool to administrate the Nextcloud users.
CVE-2020-8294 1 Nextcloud 1 Nextcloud Server 2021-02-05 3.5 LOW 5.4 MEDIUM
A missing link validation in Nextcloud Server before 20.0.2, 19.0.5, 18.0.11 allows execution of a stored XSS attack using Internet Explorer when saving a 'javascript:' URL in markdown format.
CVE-2020-8133 1 Nextcloud 1 Nextcloud Server 2020-11-19 5.0 MEDIUM 5.3 MEDIUM
A wrong generation of the passphrase for the encrypted block in Nextcloud Server 19.0.1 allowed an attacker to overwrite blocks in a file.
CVE-2020-8155 1 Nextcloud 1 Nextcloud Server 2020-10-19 3.5 LOW 5.4 MEDIUM
An outdated 3rd party library in the Files PDF viewer for Nextcloud Server 18.0.2 caused a Cross-site scripting vulnerability when opening a malicious PDF.
CVE-2019-5449 1 Nextcloud 1 Nextcloud Server 2020-10-16 4.0 MEDIUM 4.3 MEDIUM
A missing check in the Nextcloud Server prior to version 15.0.1 causes leaking of calendar event names when adding or modifying confidential or private events.
CVE-2019-15617 1 Nextcloud 1 Nextcloud Server 2020-10-09 5.5 MEDIUM 5.4 MEDIUM
A missing check in Nextcloud Server 17.0.0 allowed an attacker to set up a new second factor when trying to login.
CVE-2020-8138 1 Nextcloud 1 Nextcloud Server 2020-03-25 4.0 MEDIUM 6.5 MEDIUM
A missing check for IPv4 nested inside IPv6 in Nextcloud server < 17.0.1, < 16.0.7, and < 15.0.14 allowed a Server-Side Request Forgery (SSRF) vulnerability when subscribing to a malicious calendar URL.
CVE-2019-15612 1 Nextcloud 1 Nextcloud Server 2020-03-24 3.2 LOW 5.9 MEDIUM
A bug in Nextcloud Server 15.0.2 causes pending 2FA logins to not be correctly expired when the password of the user is reset.
CVE-2019-15621 1 Nextcloud 1 Nextcloud Server 2020-02-16 4.0 MEDIUM 6.5 MEDIUM
Improper permissions preservation in Nextcloud Server 16.0.1 causes sharees to be able to reshare with write permissions when sharing the mount point of a share they received, as a public link.
CVE-2020-8119 1 Nextcloud 1 Nextcloud Server 2020-02-16 4.0 MEDIUM 4.3 MEDIUM
Improper authorization in Nextcloud server 17.0.0 causes leaking of previews and files when a file-drop share link is opened via the gallery app.
CVE-2019-15619 1 Nextcloud 3 Deck, Nextcloud Server, Talk 2020-02-12 3.5 LOW 4.8 MEDIUM
Improper neutralization of file names, conversation names and board names in Nextcloud Server 16.0.3, Nextcloud Talk 6.0.3 and Nextcloud Deck 0.6.5 causes an XSS when linking them with each others in a project.
CVE-2019-15616 1 Nextcloud 1 Nextcloud Server 2020-02-11 4.0 MEDIUM 4.3 MEDIUM
Dangling remote share attempts in Nextcloud 16 allow a DNS pollution when running long.
CVE-2020-8122 1 Nextcloud 1 Nextcloud Server 2020-02-11 4.0 MEDIUM 4.3 MEDIUM
A missing check in Nextcloud Server 14.0.3 could give recipient the possibility to extend the expiration date of a share they received.
CVE-2019-15618 1 Nextcloud 1 Nextcloud Server 2020-02-06 3.5 LOW 4.8 MEDIUM
Missing escaping of HTML in the Updater of Nextcloud 15.0.5 allowed a reflected XSS when starting the updater from a malicious location.
CVE-2020-8117 1 Nextcloud 1 Nextcloud Server 2020-02-06 4.0 MEDIUM 4.3 MEDIUM
Improper preservation of permissions in Nextcloud Server 14.0.3 causes the event details to be leaked when sharing a non-public event.
CVE-2018-3776 1 Nextcloud 1 Nextcloud Server 2019-10-09 5.0 MEDIUM 5.3 MEDIUM
Improper input validator in Nextcloud Server prior to 12.0.3 and 11.0.5 could lead to an attacker's actions not being logged in the audit log.
CVE-2018-3780 1 Nextcloud 1 Nextcloud Server 2019-10-09 3.5 LOW 5.4 MEDIUM
A missing sanitization of search results for an autocomplete field in NextCloud Server <13.0.5 could lead to a stored XSS requiring user-interaction. The missing sanitization only affected user names, hence malicious search results could only be crafted by authenticated users.
CVE-2018-3762 1 Nextcloud 1 Nextcloud Server 2019-10-09 4.0 MEDIUM 4.3 MEDIUM
Nextcloud Server before 12.0.8 and 13.0.3 suffers from improper checks of dropped permissions for incoming shares allowing a user to still request previews for files it should not have access to.
CVE-2018-16467 1 Nextcloud 1 Nextcloud Server 2019-10-09 5.0 MEDIUM 5.3 MEDIUM
A missing check in Nextcloud Server prior to 14.0.0 could give unauthorized access to the previews of single file password protected shares.
CVE-2018-16465 1 Nextcloud 1 Nextcloud Server 2019-10-09 4.3 MEDIUM 5.3 MEDIUM
Missing state in Nextcloud Server prior to 14.0.0 would not enforce the use of a second factor at login if the the provider of the second factor failed to load.
CVE-2018-16464 1 Nextcloud 1 Nextcloud Server 2019-10-09 3.5 LOW 5.7 MEDIUM
A missing access check in Nextcloud Server prior to 14.0.0 could lead to continued access to password protected link shares when the owner had changed the password.
CVE-2017-0883 1 Nextcloud 1 Nextcloud Server 2019-10-09 5.5 MEDIUM 6.4 MEDIUM
Nextcloud Server before 9.0.55 and 10.0.2 suffers from a permission increase on re-sharing via OCS API issue. A permission related issue within the OCS sharing API allowed an authenticated adversary to reshare shared files with an increasing permission set. This may allow an attacker to edit files in a share despite having only a 'read' permission set. Note that this only affects folders and files that the adversary has at least read-only permissions for.
CVE-2017-0936 1 Nextcloud 1 Nextcloud Server 2019-10-09 4.9 MEDIUM 5.7 MEDIUM
Nextcloud Server before 11.0.7 and 12.0.5 suffers from an Authorization Bypass Through User-Controlled Key vulnerability. A missing ownership check allowed logged-in users to change the scope of app passwords of other users. Note that the app passwords themselves where neither disclosed nor could the error be misused to identify as another user.
CVE-2017-0893 1 Nextcloud 1 Nextcloud Server 2019-10-09 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-2017-0891 1 Nextcloud 1 Nextcloud Server 2019-10-09 3.5 LOW 5.4 MEDIUM
Nextcloud Server before 9.0.58 and 10.0.5 and 11.0.3 are vulnerable to an inadequate escaping of error messages leading to XSS vulnerabilities in multiple components.
CVE-2016-9465 2 Nextcloud, Owncloud 2 Nextcloud Server, Owncloud 2019-10-09 3.5 LOW 5.4 MEDIUM
Nextcloud Server before 10.0.1 & ownCloud Server before 9.0.6 and 9.1.2 suffer from Stored XSS in CardDAV image export. The CardDAV image export functionality as implemented in Nextcloud/ownCloud allows the download of images stored within a vCard. Due to not performing any kind of verification on the image content this is prone to a stored Cross-Site Scripting attack.
CVE-2016-9464 1 Nextcloud 1 Nextcloud Server 2019-10-09 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.