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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-2023-32320 Nextcloud Server's brute force protection allows someone to send more requests than intended — security-advisories CWE-307 8.7 High 2023-06-22
CVE-2023-33183 Error in calendar when booking an appointment reveals the full path of the website — security-advisories CWE-285 2.6 Low 2023-05-30
CVE-2023-33182 Nextcloud Contacts photos only sanitized if mime type is all lower case — security-advisories CWE-20 - - 2023-05-30
CVE-2023-33184 Blind SSRF in the Nextcloud Mail app on avatar endpoint — security-advisories CWE-918 3.5 Low 2023-05-27
CVE-2023-32319 Basic auth header on WebDAV requests is not brute-force protected in Nextcloud — security-advisories CWE-307 8.1 High 2023-05-26
CVE-2023-32318 User session not correctly destroyed on logout — security-advisories CWE-613 7.2 High 2023-05-26
CVE-2023-32074 Nextcloud user_oidc app is missing brute force protection — security-advisories CWE-307 8.0 High 2023-05-25
CVE-2023-28847 Nextcloud Server missing brute force protection for passwords of password protected share links — security-advisories CWE-307 3.1 Low 2023-04-25
CVE-2023-30540 Chat poll data can still be queried from API after purging history in Nextcloud talk — security-advisories CWE-200 3.5 Low 2023-04-17
CVE-2023-30539 Users can set up workflows using restricted and invisible system tags in Nextcloud — security-advisories CWE-284 6.5 Medium 2023-04-17
CVE-2023-29000 Nextcloud Desktop client does not verify received singed certificate in end-to-end encryption — security-advisories CWE-295 5.4 Medium 2023-04-04
CVE-2023-28999 Nextcloud: Lack of authenticity of metadata keys allows a malicious server to gain access to E2EE folders — security-advisories CWE-325 6.9 Medium 2023-04-04
CVE-2023-28998 Nextcloud Desktop client misbehaves with E2EE when the server returns empty list of metadata keys — security-advisories CWE-325 6.7 Medium 2023-04-04
CVE-2023-28997 Nextcloud Desktop: Initialization vector reuse in E2EE allows malicious server admin to break, manipulate, access files — security-advisories CWE-323 6.7 Medium 2023-04-04
CVE-2023-28848 CSRF protection on user_oidc login returned the expected token in case of an error — security-advisories CWE-352 4.8 Medium 2023-04-04
CVE-2023-28834 Full path of data directory exposed to Nextcloud server users — security-advisories CWE-212 3.5 Low 2023-04-03
CVE-2023-28845 Chat room membership disclosed via autocompletion in Nextcloud talk — security-advisories CWE-284 3.5 Low 2023-03-31
CVE-2023-28844 User without download rights can download older version of that file in nextcloud server — security-advisories CWE-284 5.7 Medium 2023-03-31
CVE-2023-28645 Secure view can be bypassed by using internal API endpoint in Nextcloud richdocuments — security-advisories CWE-284 5.7 Medium 2023-03-31
CVE-2023-28835 Insecure randomness for default password in nextcloud — security-advisories CWE-338 3.5 Low 2023-03-30
CVE-2023-28833 Unrestricted filenames for logo or favicon as admin in the theming settings in nextcloud server — security-advisories CWE-22 2.4 Low 2023-03-30
CVE-2023-28644 Reference fetch can saturate the server bandwidth for 10 seconds in nextcloud server — security-advisories CWE-400 5.7 Medium 2023-03-30
CVE-2023-28643 Potential share collision for recipients when caching is enabled in nextcloud server — security-advisories CWE-706 5.5 Medium 2023-03-30
CVE-2023-26482 Scope of workflow operations is not validated in nextcloud server — security-advisories CWE-78 9.1 Critical 2023-03-30
CVE-2023-28646 App lockout in nextcloud Android app can be bypassed via thirdparty apps — security-advisories CWE-287 4.4 Medium 2023-03-30
CVE-2023-28647 App pin of the iOS app can be bypassed in Nextcloud iOS — security-advisories CWE-281 4.4 Medium 2023-03-30
CVE-2023-25817 Delete permissions are not saved when creating public share in Nextcloud server — security-advisories CWE-281 3.5 Low 2023-03-27
CVE-2023-25818 Missing brute force protection on password reset token in Nextcloud Server — security-advisories CWE-307 5.3 Medium 2023-03-27
CVE-2023-25820 Nextcloud Server and Enterprise Server missing brute force protection on password confirmation modal — security-advisories CWE-307 4.2 Medium 2023-03-22
CVE-2023-26041 Nextcloud Talk messages can still be seen on conversation after expiring when cron is misconfigured — security-advisories CWE-359 2.6 Low 2023-02-27

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.