Unspecified vulnerability in Nextcloud (CNVD-2021-51795)

Nextcloud is a set of open source self-hosted file synchronization and sharing communication application platform from Nextcloud, Germany. A security vulnerability exists in Nextcloud Server versions prior to 19.0.13, 20.011, and 21.0.3, which can be exploited by an attacker to enumerate...

Unspecified vulnerability in Nextcloud (CNVD-2021-51803)

Nextcloud is a set of open source self-hosted file synchronization and sharing communication application platform from Nextcloud, Germany. A security vulnerability in Nextcloud Server in versions prior to 19.0.13, 20.011, and 21.0.3 can be exploited by an attacker to enumerate potentially valid...

Unspecified Vulnerability in Nextcloud (CNVD-2021-51799)

Nextcloud is a set of open source self-hosted file synchronization and sharing communication application platform from Nextcloud, Germany. A security vulnerability exists in Nextcloud Server versions prior to 19.0.13, 20.011, and 21.0.3, which stems from the fact that the webauthn token is not...

Unspecified Vulnerability in Nextcloud (CNVD-2021-51814)

Nextcloud is a set of open source self-hosted file synchronization and sharing communication application platform from Nextcloud, Germany. A security vulnerability exists in Nextcloud Server versions prior to 19.0.13, 20.0.11, and 21.0.3, which stems from the audit logging feature failing to log...

Nextcloud Permission License and Access Control Issues Vulnerabilities

Nextcloud is a set of open source self-hosted file synchronization and sharing communication application platform from Nextcloud, Germany. A permission permission and access control issue vulnerability exists in Nextcloud Server in versions prior to 19.0.13, 20.011, and 21.0.3, which stems from...

Unspecified Vulnerability in Nextcloud (CNVD-2021-51796)

Nextcloud is a set of open source self-hosted file synchronization and sharing communication application platform from Nextcloud, Germany. A security vulnerability in Nextcloud Server in versions prior to 19.0.13, 20.011, and 21.0.3 can be exploited by an attacker to enumerate potentially valid...

Unspecified vulnerability in Nextcloud (CNVD-2021-51815)

Nextcloud is a set of open source self-hosted file synchronization and sharing communication application platform from Nextcloud, Germany. A security vulnerability exists in Nextcloud Server that stems from a lack of privilege checking in Nextcloud Server, where tokens are able to change their ow...

Unspecified Vulnerability in Nextcloud (CNVD-2021-51810)

Nextcloud is a set of open source self-hosted file synchronization and sharing communication application platform from Nextcloud, Germany. A security vulnerability exists in Nextcloud Server versions prior to 19.0.13, 20.0.11, and 21.0.3, which stems from the fact that rate limiting in Nextcloud...

Nextcloud Trust Management Issues Vulnerability (CNVD-2021-51798)

Nextcloud is a set of open source self-hosted file synchronization and sharing communication application platform from Nextcloud, Germany. The Nextcloud Android Client prior to version 3.16.1 is vulnerable to a trust management issue that stems from the Nextcloud Android Client skipping a step th...

Nextcloud Information Disclosure Vulnerability (CNVD-2021-51797)

Nextcloud is a set of open source self-hosted file synchronization and sharing communication application platform from Nextcloud, Germany. An information disclosure vulnerability exists in Nextcloud Server in versions prior to 19.0.13, 20.011, and 21.0.3, which could result in the full path of a...

Nextcloud Cross-Site Scripting Vulnerability (CNVD-2021-51801)

Nextcloud is a set of open source self-hosted file synchronization and sharing communication application platform from Nextcloud, Germany. A cross-site scripting vulnerability exists in Nextcloud Text in versions prior to 19.0.13, 20.0.11 and 21.0.3. No detailed vulnerability details are availabl...

Nextcloud: HEIC image preview can be used to invoke Imagick

The HEIC image preview provider calls into Imagick at https://github.com/nextcloud/server/blob/5d097ddb4b99673f57b8c085dedd93880ee2539d/lib/private/Preview/HEIC.phpL98-L109. This is bad as Imagick processes all kind of image types. One can use this for example to exfiltrate arbitrary files by...

Nextcloud: High memory usage for generating preview of broken image

When the attached file is uploaded and a preview is generated e.g. in the folder overview of the files app, the PHP process allocates a very large amount of memory on my machine it was shortly around 5 GByte and CPU. Tested with latest master 1366b35081f1d92429787696f4175c19a602858a on Ubuntu 20....

Nextcloud Input Validation Error Vulnerability (CNVD-2022-20701)

An input validation error vulnerability exists in Nextcloud Server, which stems from the fact that DownloadResponse does not do security checks on uploaded file names, and could be exploited to trick users into downloading malicious files with normal file name...

CVE-2021-32741

Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, there was a lack of ratelimiting on the public share link mount endpoint. This may have allowed an attacker to enumerate potentially valid share tokens. The issue was fixed in...

CVE-2021-32734

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 shared files. The issu...

CVE-2021-32734

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 shared files. The issu...

CVE-2021-32741

Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, there was a lack of ratelimiting on the public share link mount endpoint. This may have allowed an attacker to enumerate potentially valid share tokens. The issue was fixed in...

CVE-2021-32734

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 shared files. The issu...

Path traversal

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 shared files. The issu...