Nextcloud
by Nextcloud
Source repositories
CVEs (144)
| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2019-15619 | Med | 0.31 | 4.8 | 0.01 | Feb 4, 2020 | 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-2019-15618 | Med | 0.31 | 4.8 | 0.01 | Feb 4, 2020 | 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-2021-29438 | Med | 0.30 | 4.6 | 0.01 | Apr 13, 2021 | The Nextcloud dialogs library (npm package @nextcloud/dialogs) before 3.1.2 insufficiently escaped text input passed to a toast. If your application displays toasts with user-supplied input, this could lead to a XSS vulnerability. The vulnerability has been patched in version… | ||
| CVE-2020-8152 | Med | 0.29 | 4.4 | 0.00 | Nov 16, 2020 | Insufficient protection of the server-side encryption keys in Nextcloud Server 19.0.1 allowed an attacker to replace the public key to decrypt them later on. | ||
| CVE-2025-64011 | Med | 0.28 | 4.3 | 0.00 | Dec 12, 2025 | Nextcloud Server 30.0.0 is vulnerable to an Insecure Direct Object Reference (IDOR) in the /core/preview endpoint. Any authenticated user can access previews of arbitrary files belonging to other users by manipulating the fileId parameter. This allows unauthorized disclosure of… | ||
| CVE-2021-32657 | Med | 0.28 | 4.3 | 0.02 | Jun 1, 2021 | 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… | ||
| CVE-2020-8235 | Med | 0.28 | 4.3 | 0.01 | Oct 5, 2020 | Missing access control in Nextcloud Deck 1.0.4 caused an insecure direct object reference allowing an attacker to view all attachments. | ||
| CVE-2020-8122 | Med | 0.28 | 4.3 | 0.01 | Feb 4, 2020 | 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-2020-8119 | Med | 0.28 | 4.3 | 0.01 | Feb 4, 2020 | 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-2020-8117 | Med | 0.28 | 4.3 | 0.01 | Feb 4, 2020 | Improper preservation of permissions in Nextcloud Server 14.0.3 causes the event details to be leaked when sharing a non-public event. | ||
| CVE-2019-15616 | Med | 0.28 | 4.3 | 0.01 | Feb 4, 2020 | Dangling remote share attempts in Nextcloud 16 allow a DNS pollution when running long. | ||
| CVE-2019-5449 | Med | 0.28 | 4.3 | 0.01 | Jul 30, 2019 | 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-2017-0888 | Med | 0.28 | 4.3 | 0.02 | Apr 5, 2017 | Nextcloud Server before 9.0.55 and 10.0.2 suffers from a Content-Spoofing vulnerability in the "files" app. The top navigation bar displayed in the files list contained partially user-controllable input leading to a potential misrepresentation of information. | ||
| CVE-2026-45543 | Med | 0.27 | 5.3 | 0.00 | Jun 1, 2026 | Nextcloud is an open source content collaboration platform. From version 4.3.0 to before version 5.2.7, a removed collaborator retains unauthorized read access to uploaded respondent files for the affected form. The scope is limited to uploaded files for forms where that user… | ||
| CVE-2020-8150 | Med | 0.27 | 4.1 | 0.00 | Nov 9, 2020 | 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-2020-8179 | Med | 0.27 | 4.1 | 0.01 | Jul 2, 2020 | Improper access control in Nextcloud Deck 1.0.0 allowed an attacker to inject tasks into other users decks. | ||
| 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-2026-45544 | Med | 0.21 | 4.3 | 0.00 | Jun 1, 2026 | Nextcloud is an open source content collaboration platform. From version 0.8.0 to before version 1.0.4, the view filter criteria is exposed to users with read-only permissions in Nextcloud Tables. This issue has been patched in versions 1.0.4 and 2.0.0. | ||
| CVE-2026-45286 | Med | 0.21 | 4.3 | 0.00 | Jun 1, 2026 | Nextcloud is an open source content collaboration platform. From versions 5.5.13 to before 5.5.17, and 6.2.0 to before 6.2.3, an authenticated user can enumerate users on the same Nextcloud instance by using the Calendar app's endpoint for suggesting attendees. The sharing… | ||
| CVE-2026-45264 | Med | 0.21 | 4.3 | 0.00 | Jun 1, 2026 | Nextcloud is an open source content collaboration platform. From versions 17.0.0 to before 17.0.15, 18.0.0 to before 18.1.12, 19.0.0 to before 19.1.16, 20.0.0 to before 20.1.11, and 21.0.0 to before 21.0.4, a user with READ and CREATE permission, but no UPDATE permission for a… |
- risk 0.31cvss 4.8epss 0.01
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.
- risk 0.31cvss 4.8epss 0.01
Missing escaping of HTML in the Updater of Nextcloud 15.0.5 allowed a reflected XSS when starting the updater from a malicious location.
- risk 0.30cvss 4.6epss 0.01
The Nextcloud dialogs library (npm package @nextcloud/dialogs) before 3.1.2 insufficiently escaped text input passed to a toast. If your application displays toasts with user-supplied input, this could lead to a XSS vulnerability. The vulnerability has been patched in version…
- risk 0.29cvss 4.4epss 0.00
Insufficient protection of the server-side encryption keys in Nextcloud Server 19.0.1 allowed an attacker to replace the public key to decrypt them later on.
- risk 0.28cvss 4.3epss 0.00
Nextcloud Server 30.0.0 is vulnerable to an Insecure Direct Object Reference (IDOR) in the /core/preview endpoint. Any authenticated user can access previews of arbitrary files belonging to other users by manipulating the fileId parameter. This allows unauthorized disclosure of…
- risk 0.28cvss 4.3epss 0.02
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…
- risk 0.28cvss 4.3epss 0.01
Missing access control in Nextcloud Deck 1.0.4 caused an insecure direct object reference allowing an attacker to view all attachments.
- risk 0.28cvss 4.3epss 0.01
A missing check in Nextcloud Server 14.0.3 could give recipient the possibility to extend the expiration date of a share they received.
- risk 0.28cvss 4.3epss 0.01
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.
- risk 0.28cvss 4.3epss 0.01
Improper preservation of permissions in Nextcloud Server 14.0.3 causes the event details to be leaked when sharing a non-public event.
- risk 0.28cvss 4.3epss 0.01
Dangling remote share attempts in Nextcloud 16 allow a DNS pollution when running long.
- risk 0.28cvss 4.3epss 0.01
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.
- risk 0.28cvss 4.3epss 0.02
Nextcloud Server before 9.0.55 and 10.0.2 suffers from a Content-Spoofing vulnerability in the "files" app. The top navigation bar displayed in the files list contained partially user-controllable input leading to a potential misrepresentation of information.
- risk 0.27cvss 5.3epss 0.00
Nextcloud is an open source content collaboration platform. From version 4.3.0 to before version 5.2.7, a removed collaborator retains unauthorized read access to uploaded respondent files for the affected form. The scope is limited to uploaded files for forms where that user…
- risk 0.27cvss 4.1epss 0.00
A cryptographic issue in Nextcloud Server 19.0.1 allowed an attacker to downgrade the encryption scheme and break the integrity of encrypted files.
- risk 0.27cvss 4.1epss 0.01
Improper access control in Nextcloud Deck 1.0.0 allowed an attacker to inject tasks into other users decks.
- 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 4.3epss 0.00
Nextcloud is an open source content collaboration platform. From version 0.8.0 to before version 1.0.4, the view filter criteria is exposed to users with read-only permissions in Nextcloud Tables. This issue has been patched in versions 1.0.4 and 2.0.0.
- risk 0.21cvss 4.3epss 0.00
Nextcloud is an open source content collaboration platform. From versions 5.5.13 to before 5.5.17, and 6.2.0 to before 6.2.3, an authenticated user can enumerate users on the same Nextcloud instance by using the Calendar app's endpoint for suggesting attendees. The sharing…
- risk 0.21cvss 4.3epss 0.00
Nextcloud is an open source content collaboration platform. From versions 17.0.0 to before 17.0.15, 18.0.0 to before 18.1.12, 19.0.0 to before 19.1.16, 20.0.0 to before 20.1.11, and 21.0.0 to before 21.0.4, a user with READ and CREATE permission, but no UPDATE permission for a…
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