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nextcloud — Vulnerabilities & Security Advisories 297

Browse all 297 CVE security advisories affecting nextcloud. AI-powered Chinese analysis, POCs, and references for each vulnerability.

Nextcloud operates as an open-source file sharing and collaboration platform, providing self-hosted alternatives to commercial cloud services. With 261 recorded Common Vulnerabilities and Exposures (CVEs), the software has historically been susceptible to critical security flaws, including remote code execution, cross-site scripting, and privilege escalation vulnerabilities. These issues often stem from improper input validation or insecure default configurations within its PHP-based architecture. Notable incidents have involved unauthorized data access and server compromise, highlighting risks associated with complex plugin ecosystems and frequent updates. While the project maintains a public security policy and encourages responsible disclosure, the high volume of past CVEs indicates a need for rigorous code auditing and strict configuration management by administrators to mitigate potential exploitation vectors in production environments.

Found 260 results / 297 Clear Filters
CVE ID Title CVSS Severity Published
CVE-2023-48308 Calendar app returns full stacktrace when an error happens while editing appointment — security-advisories CWE-1258 3.5 Low 2023-12-21
CVE-2023-48307 Nextcloud Mail app vulnerable to Server-Side Request Forgery — security-advisories CWE-918 3.5 Low 2023-11-21
CVE-2023-48306 Nextcloud Server DNS pin middleware can be tricked into DNS rebinding allowing SSRF — security-advisories CWE-918 5.0 Medium 2023-11-21
CVE-2023-48305 Nextcloud Server user_ldap app logs user passwords in the log file on level debug — security-advisories CWE-312 4.2 Medium 2023-11-21
CVE-2023-48304 Nextcloud Server vulnerable to attacker enabling/disabling birthday calendar for any user — security-advisories CWE-639 4.3 Medium 2023-11-21
CVE-2023-48303 Nextcloud Server admins can change authentication details of user configured external storage — security-advisories CWE-284 2.4 Low 2023-11-21
CVE-2023-48302 Nextcloud Server vulnerable to Self XSS when pasting HTML into Text app with Ctrl+Shift+V — security-advisories CWE-79 3.5 Low 2023-11-21
CVE-2023-48301 Nextcloud Server HTML injection in search UI when selecting a circle with HTML in the display name — security-advisories CWE-79 3.5 Low 2023-11-21
CVE-2023-48239 Nextcloud Server users can make external storage mount points inaccessible for other users — security-advisories CWE-284 8.5 High 2023-11-21
CVE-2023-45150 Inviting excessive long email addresses to a calendar event makes the Nextcloud server unresponsive — security-advisories CWE-400 4.3 Medium 2023-10-16
CVE-2023-45149 Password of talk conversations can be bruteforced in Nextcloud — security-advisories CWE-307 4.3 Medium 2023-10-16
CVE-2023-45148 Rate limiter not working reliable when Memcached is installed in Nextcloud — security-advisories CWE-307 4.3 Medium 2023-10-16
CVE-2023-45151 OAuth2 client_secret stored in plain text in the Nextcloud database — security-advisories CWE-312 6.5 Medium 2023-10-16
CVE-2023-45660 Require strict cookies for image proxy requests in Nextcloud Mail — security-advisories CWE-918 4.3 Medium 2023-10-16
CVE-2023-39960 Nextcloud Server has improper restriction of excessive authentication attempts on WebDAV endpoint — security-advisories CWE-307 5.0 Medium 2023-10-13
CVE-2023-39963 Missing password confirmation when creating app passwords — security-advisories CWE-284 8.1 High 2023-08-10
CVE-2023-39962 Users can delete external storage mount points — security-advisories CWE-284 7.7 High 2023-08-10
CVE-2023-39961 Text does not respect "Allow download" permissions — security-advisories CWE-284 3.5 Low 2023-08-10
CVE-2023-39959 Existence of calendars and address books can be checked by unauthenticated users — security-advisories CWE-284 3.5 Low 2023-08-10
CVE-2023-39958 Missing brute force protection on password reset token OAuth2 API controller — security-advisories CWE-307 5.8 Medium 2023-08-10
CVE-2023-39957 Path traversal allows tricking the Talk Android app into writing files into it's root directory — security-advisories CWE-22 3.3 - 2023-08-10
CVE-2023-39955 Notes attachment render HTML in preview mode — security-advisories CWE-79 3.5 Low 2023-08-10
CVE-2023-39954 user_oidc app stores client secret unencrypted in database — security-advisories CWE-311 3.8 Low 2023-08-10
CVE-2023-39953 Issuer not verified from obtained token in user_oidc — security-advisories CWE-303 4.8 Medium 2023-08-10
CVE-2023-39952 Advanced permissions not respected when copying entire group folders — security-advisories CWE-284 6.5 Medium 2023-08-10
CVE-2023-35928 Nextcloud user scoped external storage can be used to gather credentials of other users — security-advisories CWE-274 8.5 High 2023-06-23
CVE-2023-35927 Nextcloud system addressbooks can be modified by malicious trusted server — security-advisories CWE-284 7.6 High 2023-06-23
CVE-2023-35173 End-to-End encrypted file-drops can be made inaccessible — security-advisories CWE-284 5.7 Medium 2023-06-23
CVE-2023-35172 Nextcloud Server password reset endpoint is not brute force protected — security-advisories CWE-307 8.7 High 2023-06-23
CVE-2023-35171 Nextcloud Server vulnerable to open redirect on "Unsupported browser" warning — security-advisories CWE-601 4.1 Medium 2023-06-23

This page lists every published CVE security advisory associated with nextcloud. Each entry links to a detailed page with CVSS scoring, CWE classification, affected products and references. AI-generated Chinese analysis is provided for fast triage.