PT-2025-49288

Name of the Vulnerable Software and Affected Versions Nextcloud Tables versions prior to 0.8.9 Nextcloud Tables versions prior to 0.9.6 Nextcloud Tables versions prior to 1.0.1 Description Nextcloud Tables allows users to create custom tables with defined columns. Before versions 0.8.9, 0.9.6, an...

PT-2025-49294

Name of the Vulnerable Software and Affected Versions Nextcloud Mail versions prior to 5.5.3 Description A stored HTML injection issue exists in the Mail app's message list, potentially allowing an authenticated user to inject HTML into email subjects. The Nextcloud Server’s content security poli...

Nextcloud Tables 安全漏洞

Nextcloud Tables is an open source tables application from Nextcloud. A security vulnerability exists in Nextcloud Tables versions prior to 0.8.7 and prior to 0.9.4, which stems from an authenticated user being able to view metadata of other forms, potentially leading to information disclosure...

Deck 安全漏洞

Deck is a Kanban style organization tool open-sourced by Nextcloud. Designed for personal planning and project organization for teams integrating with Nextcloud. A security vulnerability exists in Deck versions prior to 1.12.7, prior to 1.14.4, and prior to 1.15.1, which stems from a file extensi...

PT-2025-49297

Name of the Vulnerable Software and Affected Versions Nextcloud Deck versions prior to 1.12.7 Nextcloud Deck versions prior to 1.14.4 Nextcloud Deck versions prior to 1.15.1 Description Nextcloud Deck is a kanban style organization tool for personal planning and project organization integrated wi...

PT-2025-49292

Name of the Vulnerable Software and Affected Versions Nextcloud Tables versions prior to 0.8.7 Nextcloud Tables versions prior to 0.9.4 Description Authenticated users could view metadata of columns in other tables within the Tables app by manipulating the numeric ID in a request. This allowed...

PT-2025-49302

Name of the Vulnerable Software and Affected Versions Nextcloud Twofactor WebAuthn versions prior to 1.4.2 Nextcloud Twofactor WebAuthn versions prior to 2.4.1 Description A missing ownership check allows an attacker to remove a user's WebAuthn two-factor authentication device by correctly guessi...

CVE-2025-66552: Insufficient Logging

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 adminaudit app to not properly log all actions on files and folders inside groupfolders. This vulnerability is fixed ...

CVE-2025-66547: Authorization Bypass Through User-Controlled Key

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...

CVE-2025-66512: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

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...

CVE-2025-66511: Use of Insufficiently Random Values

Nextcloud Calendar is a calendar app for Nextcloud. Prior to 6.0.3, the Calendar app generates participant tokens for meeting proposals using a hash function, allowing an attacker to compute valid participant tokens, which allowed them to request details and submit dates in meeting proposals. The...

CVE-2025-66510: Exposure of Private Personal Information to an Unauthorized Actor

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 prop...

CVE-2025-66550: Improper Handling of Unexpected Data Type

Nextcloud Calendar is a calendar app for Nextcloud. Prior to 4.7.17 and 5.2.4, when a malicious user creates a calendar event with a crafted attachment that links to a download link of a file on the same Nextcloud server, the file would be downloaded without the user confirming the action. This...

CVE-2025-66557: Improper Access Control

Nextcloud Deck is a kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud. Prior to 1.14.6 and 1.15.2, a bug in the permission logic allowed users with "Can share" permission to modify the permissions of other recipients. This...

CVE-2025-66551: Authorization Bypass Through User-Controlled Key

Nextcloud Tables allows you to create your own tables with individual columns. Prior to 0.8.6 and 0.9.3, a malicious user was able to create their own table and then move a column to a victims table. This vulnerability is fixed in 0.8.6 and 0.9.3...

CVE-2025-66548: Improper Encoding or Escaping of Output

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 different extension th...

CVE-2025-66513: Authorization Bypass Through User-Controlled Key

Nextcloud Tables allows you to create your own tables with individual columns. Prior to 0.8.9, 0.9.6, and 1.0.1, the information which table numeric ID is shared with which groups or users and the respective permissions was not limited to privileged users. This vulnerability is fixed in 0.8.9,...

CVE-2025-66514: Improper Neutralization of Input During Web Page Generation

Nextcloud Mail is the mail app for Nextcloud, a self-hosted productivity platform. Prior to 5.5.3, a stored HTML injection in the Mail app's message list allowed an authenticated user to inject HTML into the email subjects. Javascript was correctly blocked by the content security policy of the...

CVE-2025-66558: Authorization Bypass Through User-Controlled Key

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. The victim would...

CVE-2025-66556: Authorization Bypass Through User-Controlled Key

Nextcloud talk is a video & audio conferencing app for Nextcloud. Prior to 20.1.8 and 21.1.2, a participant with chat permissions was able to delete poll drafts of other participants within the conversation based on their numeric ID. This vulnerability is fixed in 20.1.8 and 21.1.2...