CVE-2023-39953

useroidc provides the OIDC connect user backend for Nextcloud, an open-source cloud platform. Starting in version 1.0.0 and prior to version 1.3.3, missing verification of the issuer would have allowed an attacker to perform a man-in-the-middle attack returning corrupted or known token they also...

CVE-2023-39952

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...

CVE-2023-39952 Advanced permissions not respected when copying entire group folders

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...

CVE-2023-39952

CVE-2023-39952 affects Nextcloud Server: a user could access files inside a subfolder of a groupfolder despite advanced permissions. Affected are Nextcloud Server versions starting at 22.0.0 up to but not including the patches listed for 22.2.10.13, 23.0.12.8, 24.0.12.4, 25.0.8, 26.0.3, and 27.0....

CVE-2023-39952 Advanced permissions not respected when copying entire group folders

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...

CVE-2023-39952 Advanced permissions not respected when copying entire group folders

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...

Missing password confirmation when creating app passwords

None...

Existance of calendars and addressbooks can be checked by unauthenticated users

None...

Users can delete external storage mount points

None...

Text does not respect "Allow download" permissions

None...

Missing brute force protection on OAuth2 API controller

None...

Path traversal allows tricking the Talk Android app into writing files into it's root directory

None...

Notes attachment render HTML in preview mode

None...

user_oidc app stores client secret unencrypted in database

None...

Issuer not verified from obtained token in user_oidc

None...

Advanced permissions not respected when copying entire group folders

None...

Nextcloud Talk Path Traversal Vulnerability

Nextcloud Talk is a self-hosted local audio/video and chat communication service from Nextcloud Germany. A path traversal vulnerability exists in versions prior to Nextcloud Talk 17.0.0. An attacker exploited the vulnerability to write files outside of their intended cache directory...

CVE-2023-39958: Improper Restriction of Excessive Authentication Attempts

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 Security Breach

Nextcloud is an open source suite of self-hosted file synchronization and sharing communication application platform from Nextcloud, Germany. A security vulnerability exists in Nextcloud Server. An attacker could use this vulnerability to brute-force break the client secrets of a configured OAuth...

CVE-2023-39955: Improper Neutralization of Input During Web Page Generation

Notes is a note-taking app for Nextcloud, an open-source cloud platform. Starting in version 4.4.0 and prior to version 4.8.0, when creating a note file with HTML, the content is rendered in the preview instead of the file being offered to download. Nextcloud Notes app version 4.8.0 contains a...