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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.

CVE ID Title CVSS Severity Published
CVE-2025-47791 Nextcloud Server's test remote endpoint is not rate limited — security-advisories CWE-918 4.3 Medium 2025-05-16
CVE-2025-47790 Nextcloud Server doesn't request second factor after session timeout — security-advisories CWE-287 6.4 Medium 2025-05-16
CVE-2024-52509 Nextcloud Mail app does not respect download permissions in shares — security-advisories CWE-284 3.5 Low 2024-11-15
CVE-2024-52508 Nextcloud Mail auto configurator can be tricked into sending account information to wrong servers — security-advisories CWE-200 8.2 High 2024-11-15
CVE-2024-52510 Nextcloud Desktop client behaves incorrectly if the initial end-to-end-encryption signature is empty — security-advisories CWE-295 4.2 Medium 2024-11-15
CVE-2024-52507 Share information of the Nextcloud Tables app is not limited to affected users — security-advisories CWE-639 3.5 Low 2024-11-15
CVE-2024-52511 Nextcloud Tables has an Authorization Bypass Through User-Controlled Key in Tables — security-advisories CWE-639 6.3 Medium 2024-11-15
CVE-2024-52512 Nextcloud User OIDC has an open redirection when logging in with User OIDC — security-advisories CWE-601 3.3 Low 2024-11-15
CVE-2024-52513 Nextcloud Server's Attachments folder for Text app is accessible on "Files drop" and "Password protected" shares — security-advisories CWE-200 2.6 Low 2024-11-15
CVE-2024-52514 Nextcloud Server allows users to copy folder that contain files that are blocked by the files access control — security-advisories CWE-284 4.1 Medium 2024-11-15
CVE-2024-52515 Nextcloud Server has incomplete sanitization of SVG files allows to embed other images into previews — security-advisories CWE-706 5.7 Medium 2024-11-15
CVE-2024-52516 Nextcloud Server's shares are not removed when user is limited to share with in their groups and being removed from one of them — security-advisories CWE-269 3.0 Low 2024-11-15
CVE-2024-52517 Nextcloud Server's global credentials of external storages are sent back to the frontend — security-advisories CWE-200 4.6 Medium 2024-11-15
CVE-2024-52518 Nextcloud Server is missing password confirmation when changing external storage options — security-advisories CWE-287 4.4 Medium 2024-11-15
CVE-2024-52519 Nextcloud Server's OAuth2 client secrets were stored in a recoverable way — security-advisories CWE-922 2.7 Low 2024-11-15
CVE-2024-52520 Nextcloud Server's link reference provider can be tricked into downloading bigger files than intended — security-advisories CWE-400 5.7 Medium 2024-11-15
CVE-2024-52521 Nextcloud Server has a potential hash collision for background jobs could skip queuing them — security-advisories CWE-328 2.6 Low 2024-11-15
CVE-2024-52523 Nextcloud Server Custom defined credentials of external storages are sent back to the frontend — security-advisories CWE-200 4.6 Medium 2024-11-15
CVE-2024-52525 Nextcloud Server User password is available in memory of the PHP process — security-advisories CWE-312 1.8 Low 2024-11-15
CVE-2024-37887 Nextcloud Server's events information leaked with shared calendars on recurrence exceptions — security-advisories CWE-284 3.5 Low 2024-06-14
CVE-2024-37886 Nextcloud user_oidc's ID4me does not validate signature or expiration — security-advisories CWE-347 5.4 Medium 2024-06-14
CVE-2024-37885 Code injection in Nextcloud Desktop Client for macOS — security-advisories CWE-94 3.8 Low 2024-06-14
CVE-2024-37884 Nextcloud Server's users can delete old versions of read-only shared files — security-advisories CWE-284 3.5 Low 2024-06-14
CVE-2024-37883 Nextcloud Deck can access comments and attachments of deleted cards — security-advisories CWE-284 4.3 Medium 2024-06-14
CVE-2024-37882 Nextcloud Server can reshare read&share only folder with more permissions — security-advisories CWE-284 8.1 High 2024-06-14
CVE-2024-37317 Nextcloud Notes app can be tricked into using a received share created before the user logged in — security-advisories CWE-284 4.6 Medium 2024-06-14
CVE-2024-37316 Nextcloud Calendar's event create can create attachments that link to other websites — security-advisories CWE-241 4.6 Medium 2024-06-14
CVE-2024-37315 Nextcloud Server's read-only users can restore old versions — security-advisories CWE-284 3.5 Low 2024-06-14
CVE-2024-37314 Nextcloud Photos' shared albums have no restriction on photo removal — security-advisories CWE-284 3.5 Low 2024-06-14
CVE-2024-37313 Nextcloud server allows the by-pass the second factor — security-advisories CWE-287 7.3 High 2024-06-14

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.