CVE-2025-66512 Nextcloud Server vulnerable to XSS in SVG images when opened outside of Nextcloud

Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server and Server Enterprise prior to 31.0.12 and 32.0.3, a missing sanitization allowed malicious users to circumvent the content security policy when a malicious user manages to trick a user it viewing an uploaded SVG outside...

CVE-2025-66512 Nextcloud Server vulnerable to XSS in SVG images when opened outside of Nextcloud

Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server and Server Enterprise prior to 31.0.12 and 32.0.3, a missing sanitization allowed malicious users to circumvent the content security policy when a malicious user manages to trick a user it viewing an uploaded SVG outside...

EUVD-2025-201449

Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server and Server Enterprise prior to 31.0.12 and 32.0.3, a missing sanitization allowed malicious users to circumvent the content security policy when a malicious user manages to trick a user it viewing an uploaded SVG outside...

CVE-2025-66512 Nextcloud Server vulnerable to XSS in SVG images when opened outside of Nextcloud

Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server and Server Enterprise prior to 31.0.12 and 32.0.3, a missing sanitization allowed malicious users to circumvent the content security policy when a malicious user manages to trick a user it viewing an uploaded SVG outside...

CVE-2025-66512

Nextcloud Server and Server Enterprise before 31.0.12 and 32.0.3 have a missing sanitization that can be exploited to bypass content security policy when a user is tricked into viewing a crafted SVG outside the Nextcloud UI, enabling cross-site scripting. Fedora advisories FEDORA-2025-86c0829159 ...

CVE-2025-66510 Nextcloud Server Contacts Search allowed users to retrieve contact information of other users beyond their contact list

Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server prior to 31.0.10 and 32.0.1 and Nextcloud Enterprise Server prior to 28.0.14.11, 29.0.16.8, 30.0.17.3, and 31.0.10, contacts search allowed to retrieve personal data of other users emails, names, identifiers without prop...

CVE-2025-66510 Nextcloud Server Contacts Search allowed users to retrieve contact information of other users beyond their contact list

Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server prior to 31.0.10 and 32.0.1 and Nextcloud Enterprise Server prior to 28.0.14.11, 29.0.16.8, 30.0.17.3, and 31.0.10, contacts search allowed to retrieve personal data of other users emails, names, identifiers without prop...

CVE-2025-66510

CVE-2025-66510 affects Nextcloud Server and Nextcloud Enterprise Server where the contact search feature can disclose personal data (emails, names, identifiers) of other users to authenticated users due to improper access control. Affected versions include Nextcloud Server prior to 31.0.10 and 32...

EUVD-2025-201451

Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server prior to 31.0.10 and 32.0.1 and Nextcloud Enterprise Server prior to 28.0.14.11, 29.0.16.8, 30.0.17.3, and 31.0.10, contacts search allowed to retrieve personal data of other users emails, names, identifiers without prop...

CVE-2025-66510 Nextcloud Server Contacts Search allowed users to retrieve contact information of other users beyond their contact list

Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server prior to 31.0.10 and 32.0.1 and Nextcloud Enterprise Server prior to 28.0.14.11, 29.0.16.8, 30.0.17.3, and 31.0.10, contacts search allowed to retrieve personal data of other users emails, names, identifiers without prop...

XSS in SVG images when opened outside of Nextcloud

None...

Calendar attachments of local files are offered to downloaded

None...

admin_audit does not log all actions on files in groupfolders

None...

CVE-2025-66512: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server and Server Enterprise prior to 31.0.12 and 32.0.3, a missing sanitization allowed malicious users to circumvent the content security policy when a malicious user manages to trick a user it viewing an uploaded SVG outside...

PT-2025-54984

Уязвимость облачного программного обеспечения для создания и использования хранилища данных Nextcloud Server и Nextcloud Enterprise Server связана с недостатками разграничения доступа к личной информации. Эксплуатация уязвимости может позволить нарушителю, действующему удаленно, получить...

NextCloud Server security vulnerabilities

Nextcloud Server is a Nextcloud server program from Nextcloud Open Source. A security vulnerability exists in versions of Nextcloud Server prior to 31.0.1, which stems from a non-privileged user being able to modify file labels via bulk tagging, potentially resulting in elevated privileges...

PT-2025-49268

Name of the Vulnerable Software and Affected Versions Nextcloud Server and Enterprise Server versions prior to 31.0.1 Description Non-privileged users can modify tags on files they should not have access to through bulk tagging. This affects a self-hosted personal cloud system. Recommendations...

PT-2025-49267

Name of the Vulnerable Software and Affected Versions Nextcloud Server versions prior to 31.0.12 Nextcloud Server Enterprise versions prior to 31.0.12 Nextcloud Server versions prior to 32.0.3 Nextcloud Server Enterprise versions prior to 32.0.3 Description Nextcloud Server and Server Enterprise...

NextCloud Server security vulnerabilities

Nextcloud Server is a Nextcloud server program open-sourced by Nextcloud. A security vulnerability exists in Nextcloud Server versions prior to 31.0.12 and prior to 32.0.3, which stems from insufficient cleanup and could lead to content security policy bypass...

CVE-2025-66552: Insufficient Logging

Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server and Enterprise Server prior to 30.0.9 and 31.0.1, incorrect path handling with groupfolders caused the adminaudit app to not properly log all actions on files and folders inside groupfolders. This vulnerability is fixed ...