PT-2026-45470

Nextcloud is an open source content collaboration platform. From version 2.6.0 to before version 4.3.0, when a previous collective pages was deleted and the collective was shared view-only, guests with access to the collective were able to access the deleted pages directly from the trashbin. This...

Nextcloud Tables 安全漏洞

NextCloud Tables is an open-source table application developed by NextCloud. There were security vulnerabilities in the version of NextCloud Tables from 0.8.0 to 1.0.4. These vulnerabilities stemmed from view filter conditions being exposed to users with read-only permissions...

Nextcloud Files approval 信息泄露漏洞

NextCloud Files Approval is an open-source file approval software developed by NextCloud. Versions of NextCloud Files Approval prior to version 2.7.2 had a vulnerability related to information leakage. This vulnerability stemmed from a lack of permission checks, allowing authenticated users to...

Nextcloud 授权问题漏洞

Nextcloud is an open-source, self-hosted communication platform for file synchronization and sharing developed by the German company Nextcloud. Versions of Nextcloud prior to 2.7.2 contained an authorization vulnerability. This vulnerability stemmed from permission escalation, which could...

PT-2026-45538

Name of the Vulnerable Software and Affected Versions Nextcloud Server versions 31.0.0 through 31.0.11 Nextcloud Server versions 32.0.0 through 32.0.2 Nextcloud Enterprise Server versions prior to 21.0.9.20 Nextcloud Enterprise Server versions prior to 22.2.10.35 Nextcloud Enterprise Server...

Nextcloud Teams 安全漏洞

NextCloud Teams is an open-source team collaboration and group management tool developed by NextCloud. There were security vulnerabilities in versions of NextCloud Teams from 32.0.0 to 32.0.7, and from 33.0.0 to 33.0.1. These vulnerabilities stemmed from the absence of API-level access checks,...

Nextcloud user_oidc 授权问题漏洞

Nextcloud useroidc is an application developed by the German company Nextcloud. There were authorization issues in versions of Nextcloud useroidc between 0.3.0 and 3.1.0, as well as between 5.0.0 and 5.1.0, and between 6.0.0 and 6.4.0. This issue stemmed from a lack of User OIDC signature...

PT-2026-45530

Name of the Vulnerable Software and Affected Versions Nextcloud versions 5.5.13 through 5.5.16 Nextcloud versions 6.2.0 through 6.2.2 Description An authenticated user can enumerate other users on the same instance. This is possible because sharing restrictions were not effectively applied to the...

CVE-2026-45155: Authorization Bypass Through User-Controlled Key

Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.7 and 33.0.0 to before 33.0.1, a missing access check on API level allowed to add unknown circles by their ID directly to other circles. Since circle IDs have 62^15 complexity by...

CVE-2026-45154: Improper Access Control

Nextcloud is an open source content collaboration platform. From version 2.6.0 to before version 4.3.0, when a previous collective pages was deleted and the collective was shared view-only, guests with access to the collective were able to access the deleted pages directly from the trashbin. This...

PT-2026-45527

Name of the Vulnerable Software and Affected Versions Nextcloud Server versions 32.0.0 through 32.0.1 Nextcloud Server versions 33.0.0 through 33.0.0 Nextcloud Enterprise Server versions prior to 31.0.14.4 Nextcloud Enterprise Server versions 32.0.0 through 32.0.1 Nextcloud Enterprise Server...

CVE-2026-45543: Files or Directories Accessible to External Parties

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 previously had resul...

CVE-2026-45267: Exposure of Sensitive Information to an Unauthorized Actor

Nextcloud is an open source content collaboration platform. Prior to version 5.2.6, a missing permissions check allowed users to request reading form submissions of other users. This issue has been patched in version 5.2.6...

CVE-2026-45285: Missing Authorization

Nextcloud is an open source content collaboration platform. From versions 32.0.0 to before 32.0.9, and 33.0.0 to before 33.0.3, when a user shares a folder or file with a Nextcloud Team that includes an external member a person added via email address who does not have a Nextcloud account, the...

CVE-2026-45284: Improper Access Control

Nextcloud is an open source content collaboration platform. From version 1.3.6 to before version 8.4.0, an improper check allowed users that where provided by LDAP to still authenticate towards user OIDC after they where deleted. This issue has been patched in version 8.4.0...

CVE-2026-45283: Improper Authentication

Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.2, and 33.0.0 to before 33.0.1, the fileslock app did not properly validate the ownership of files when processing DAV lock and unlock requests. An authenticated user could lock or...

CVE-2026-45282: Improper Access Control

Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.9, and 33.0.0 to before 33.0.3, an authenticated attacker can access attachments of link shares when knowing the share token, circumventing password protection or download...

CVE-2026-45281: Authorization Bypass Through User-Controlled Key

Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.9, and 33.0.0 to before 33.0.3, with the knowledge of other users’ principal URL an attacker could possibly send a request to gain full access to their calendar. Therefore, the...

PT-2026-45474

Nextcloud is an open source content collaboration platform. From versions 1.15.0 to before 1.15.4, 1.16.0 to before 1.16.3, 1.17.0 to before 1.17.1, and 1.18.0 to before 1.18.1, a malicious user with access to an end-to-end encrypted files drop link was able to also drop files into other end-to-e...

Nextcloud Server 安全漏洞

NextCloud Server is an open-source NextCloud server program. There were security vulnerabilities in versions 31.0.0 to 31.0.12, and in versions 32.0.0 to 32.0.3 of NextCloud Server. These vulnerabilities stemmed from a lack of relational checks, which could allow authenticated users to read all...