Nextcloud Server — Vulnerabilities & Security Advisories 57

This page documents security weaknesses associated with Nextcloud Server, a popular open-source self-hosted file sharing and collaboration platform. It aggregates known vulnerabilities categorized by their specific weakness types and associated tags to provide a structured overview of the product's security landscape. The content covers disclosed security issues ranging from critical remote code execution flaws and authentication bypasses to less severe information disclosure and denial-of-service vulnerabilities identified over the past several years. By compiling these entries, the page offers a comprehensive historical record of security defects affecting various versions of the Nextcloud Server software. Readers can use this resource to track vendor advisories from Nextcloud GmbH, understand the characteristics and impact of specific weakness classes within the context of file synchronization applications, and look up the complete vulnerability history for any given product release. This aggregated data serves as a reference for security researchers, system administrators, and enterprise IT teams who need to assess risk exposure, prioritize patching efforts, and maintain the integrity of their deployed Nextcloud environments. The information is organized to facilitate easy navigation between related issues and to highlight trends in vulnerability discovery for the platform.