security-advisories
by Nextcloud
Source repositories
- https://github.com/nextcloud/security-advisories
- https://github.com/nextcloud/server
- https://github.com/nextcloud/android
- https://github.com/nextcloud/desktop
- https://github.com/nextcloud/ios
- https://github.com/nextcloud/spreed
- https://github.com/nextcloud/deck
- https://github.com/nextcloud/calendar
- https://github.com/nextcloud/mail
- https://github.com/nextcloud/talk-android
- https://github.com/nextcloud/notes
- https://github.com/nextcloud/text
- https://github.com/nextcloud/contacts
- https://github.com/nextcloud/richdocuments
- https://github.com/nextcloud/groupfolders
- https://github.com/nextcloud/tables
- https://github.com/nextcloud/user_oidc
- https://github.com/nextcloud/circles
- https://github.com/nextcloud/guests
CVEs (233)
| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2022-39329 | Low | 0.23 | 3.5 | 0.01 | Oct 27, 2022 | 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… | ||
| CVE-2022-35932 | Low | 0.23 | 3.5 | 0.01 | Aug 12, 2022 | Nextcloud Talk is a video and audio conferencing app for Nextcloud. Prior to versions 12.2.7, 13.0.7, and 14.0.3, password protected conversations are susceptible to brute force attacks if the attacker has the link/conversation token. It is recommended that the Nextcloud Talk… | ||
| CVE-2022-29163 | Low | 0.23 | 3.5 | 0.01 | May 20, 2022 | 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… | ||
| CVE-2021-39224 | Low | 0.23 | 3.5 | 0.01 | Oct 25, 2021 | Nextcloud is an open-source, self-hosted productivity platform. The Nextcloud OfficeOnline application prior to version 1.1.1 returned verbatim exception messages to the user. This could result in a full path disclosure on shared files. (e.g. an attacker could see that the file… | ||
| CVE-2021-39220 | Low | 0.23 | 3.5 | 0.01 | Oct 25, 2021 | Nextcloud is an open-source, self-hosted productivity platform The Nextcloud Mail application prior to versions 1.10.4 and 1.11.0 does by default not render images in emails to not leak the read state or user IP. The privacy filter failed to filter images with a relative… | ||
| CVE-2021-32725 | Low | 0.23 | 3.5 | 0.01 | Jul 12, 2021 | Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, default share permissions were not being respected for federated reshares of files and folders. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3.… | ||
| CVE-2021-32679 | Low | 0.23 | 3.5 | 0.01 | Jul 12, 2021 | Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.0.11, and 21.0.3, filenames where not escaped by default in controllers using `DownloadResponse`. When a user-supplied filename was passed unsanitized into a `DownloadResponse`,… | ||
| CVE-2021-32655 | Low | 0.23 | 3.5 | 0.01 | Jun 1, 2021 | Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.11, 20.0.10, and 21.0.2, an attacker is able to convert a Files Drop link to a federated share. This causes an issue on the UI side of the sharing user. When the sharing user opens the… | ||
| CVE-2025-66548 | Low | 0.21 | 3.3 | 0.00 | Dec 5, 2025 | Nextcloud Deck is a kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud. Prior to 1.12.7, 1.14.4, and 1.15.1, file extension can be spoofed by using RTLO characters, tricking users into download files with a… | ||
| CVE-2025-66546 | Low | 0.21 | 3.3 | 0.00 | Dec 5, 2025 | Nextcloud Calendar is a calendar app for Nextcloud. Prior to 4.7.19, 5.5.6, and 6.0.1, the calendar app allowed blindly booking appointments with a squential ID without known the appointment token. This vulnerability is fixed in 4.7.19, 5.5.6, and 6.0.1. | ||
| CVE-2022-39210 | Low | 0.21 | 3.2 | 0.00 | Sep 17, 2022 | Nextcloud android is the official Android client for the Nextcloud home server platform. Internal paths to the Nextcloud Android app files are not properly protected. As a result access to internal files of the from within the Nextcloud Android app is possible. This may lead to… | ||
| CVE-2021-32680 | Low | 0.21 | 3.3 | 0.00 | Jul 12, 2021 | Nextcloud Server is a Nextcloud package that handles data storage. In versions priot to 19.0.13, 20.0.11, and 21.0.3, Nextcloud Server audit logging functionality wasn't properly logging events for the unsetting of a share expiration date. This event is supposed to be logged.… | ||
| CVE-2025-66558 | Low | 0.20 | 3.1 | 0.00 | Dec 5, 2025 | Nextcloud Twofactor WebAuthn is the WebAuthn Two-Factor Provider for Nextcloud. Prior to 1.4.2 and 2.4.1, a missing ownership check allowed an attack to take-away a 2FA webauthn device when correctly guessing a 80-128 character long random string of letters, numbers and symbols.… | ||
| CVE-2022-31119 | Low | 0.20 | 3.1 | 0.01 | Aug 4, 2022 | Nextcloud Mail is an email application for the nextcloud personal cloud product. Affected versions of Nextcloud mail would log user passwords to disk in the event of a misconfiguration. Should an attacker gain access to the logs complete access to affected accounts would be… | ||
| CVE-2021-32734 | Low | 0.20 | 3.1 | 0.01 | Jul 12, 2021 | Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, the Nextcloud Text application shipped with Nextcloud Server returned verbatim exception messages to the user. This could result in a full path disclosure on… | ||
| CVE-2025-66515 | Low | 0.18 | 2.7 | 0.00 | Dec 5, 2025 | The Nextcloud Approval app allows approval or disapproval of files in the sidebar. Prior to 1.3.1 and 2.5.0, an authenticated user listed as a requester in a workflow can set another user’s file into the “pending approval” without access to the file by using the numeric… | ||
| CVE-2022-29160 | Low | 0.18 | 2.8 | 0.00 | May 20, 2022 | Nextcloud Android is the Android client for Nextcloud, a self-hosted productivity platform. Prior to version 3.19.0, sensitive tokens, images, and user related details exist after deletion of a user account. This could result in misuse of the former account holder's information.… | ||
| CVE-2021-32653 | Low | 0.18 | 2.7 | 0.01 | Jun 1, 2021 | Nextcloud Server is a Nextcloud package that handles data storage. Nextcloud Server versions prior to 19.0.11, 20.0.10, or 21.0.2 send user IDs to the lookup server even if the user has no fields set to published. The vulnerability is patched in versions 19.0.11, 20.0.10, and… | ||
| CVE-2025-47794 | Low | 0.17 | 2.6 | 0.01 | May 16, 2025 | Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server prior to 29.0.13, 30.0.7, and 31.0.1 and Nextcloud Enterprise Server prior to 26.0.13.13, 27.1.11.13, 28.0.14.4, 29.0.13, 30.0.7, and 31.0.1, an attacker on a multi-user system may read temporary files… | ||
| CVE-2023-33183 | Low | 0.17 | 2.6 | 0.00 | May 30, 2023 | Calendar app for Nextcloud easily sync events from various devices with your Nextcloud. Some internal paths of the website are disclosed when the SMTP server is unavailable. It is recommended that the Calendar app is updated to 3.5.5 or 4.2.3 |
- risk 0.23cvss 3.5epss 0.01
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…
- risk 0.23cvss 3.5epss 0.01
Nextcloud Talk is a video and audio conferencing app for Nextcloud. Prior to versions 12.2.7, 13.0.7, and 14.0.3, password protected conversations are susceptible to brute force attacks if the attacker has the link/conversation token. It is recommended that the Nextcloud Talk…
- risk 0.23cvss 3.5epss 0.01
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…
- risk 0.23cvss 3.5epss 0.01
Nextcloud is an open-source, self-hosted productivity platform. The Nextcloud OfficeOnline application prior to version 1.1.1 returned verbatim exception messages to the user. This could result in a full path disclosure on shared files. (e.g. an attacker could see that the file…
- risk 0.23cvss 3.5epss 0.01
Nextcloud is an open-source, self-hosted productivity platform The Nextcloud Mail application prior to versions 1.10.4 and 1.11.0 does by default not render images in emails to not leak the read state or user IP. The privacy filter failed to filter images with a relative…
- risk 0.23cvss 3.5epss 0.01
Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, default share permissions were not being respected for federated reshares of files and folders. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3.…
- risk 0.23cvss 3.5epss 0.01
Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.0.11, and 21.0.3, filenames where not escaped by default in controllers using `DownloadResponse`. When a user-supplied filename was passed unsanitized into a `DownloadResponse`,…
- risk 0.23cvss 3.5epss 0.01
Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.11, 20.0.10, and 21.0.2, an attacker is able to convert a Files Drop link to a federated share. This causes an issue on the UI side of the sharing user. When the sharing user opens the…
- risk 0.21cvss 3.3epss 0.00
Nextcloud Deck is a kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud. Prior to 1.12.7, 1.14.4, and 1.15.1, file extension can be spoofed by using RTLO characters, tricking users into download files with a…
- risk 0.21cvss 3.3epss 0.00
Nextcloud Calendar is a calendar app for Nextcloud. Prior to 4.7.19, 5.5.6, and 6.0.1, the calendar app allowed blindly booking appointments with a squential ID without known the appointment token. This vulnerability is fixed in 4.7.19, 5.5.6, and 6.0.1.
- risk 0.21cvss 3.2epss 0.00
Nextcloud android is the official Android client for the Nextcloud home server platform. Internal paths to the Nextcloud Android app files are not properly protected. As a result access to internal files of the from within the Nextcloud Android app is possible. This may lead to…
- risk 0.21cvss 3.3epss 0.00
Nextcloud Server is a Nextcloud package that handles data storage. In versions priot to 19.0.13, 20.0.11, and 21.0.3, Nextcloud Server audit logging functionality wasn't properly logging events for the unsetting of a share expiration date. This event is supposed to be logged.…
- risk 0.20cvss 3.1epss 0.00
Nextcloud Twofactor WebAuthn is the WebAuthn Two-Factor Provider for Nextcloud. Prior to 1.4.2 and 2.4.1, a missing ownership check allowed an attack to take-away a 2FA webauthn device when correctly guessing a 80-128 character long random string of letters, numbers and symbols.…
- risk 0.20cvss 3.1epss 0.01
Nextcloud Mail is an email application for the nextcloud personal cloud product. Affected versions of Nextcloud mail would log user passwords to disk in the event of a misconfiguration. Should an attacker gain access to the logs complete access to affected accounts would be…
- risk 0.20cvss 3.1epss 0.01
Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, the Nextcloud Text application shipped with Nextcloud Server returned verbatim exception messages to the user. This could result in a full path disclosure on…
- risk 0.18cvss 2.7epss 0.00
The Nextcloud Approval app allows approval or disapproval of files in the sidebar. Prior to 1.3.1 and 2.5.0, an authenticated user listed as a requester in a workflow can set another user’s file into the “pending approval” without access to the file by using the numeric…
- risk 0.18cvss 2.8epss 0.00
Nextcloud Android is the Android client for Nextcloud, a self-hosted productivity platform. Prior to version 3.19.0, sensitive tokens, images, and user related details exist after deletion of a user account. This could result in misuse of the former account holder's information.…
- risk 0.18cvss 2.7epss 0.01
Nextcloud Server is a Nextcloud package that handles data storage. Nextcloud Server versions prior to 19.0.11, 20.0.10, or 21.0.2 send user IDs to the lookup server even if the user has no fields set to published. The vulnerability is patched in versions 19.0.11, 20.0.10, and…
- risk 0.17cvss 2.6epss 0.01
Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server prior to 29.0.13, 30.0.7, and 31.0.1 and Nextcloud Enterprise Server prior to 26.0.13.13, 27.1.11.13, 28.0.14.4, 29.0.13, 30.0.7, and 31.0.1, an attacker on a multi-user system may read temporary files…
- risk 0.17cvss 2.6epss 0.00
Calendar app for Nextcloud easily sync events from various devices with your Nextcloud. Some internal paths of the website are disclosed when the SMTP server is unavailable. It is recommended that the Calendar app is updated to 3.5.5 or 4.2.3
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