CVE-2026-45544

Nextcloud is an open source content collaboration platform. From version 0.8.0 to before version 1.0.4, the view filter criteria is exposed to users with read-only permissions in Nextcloud Tables. This issue has been patched in versions 1.0.4 and 2.0.0...

CVE-2026-45545

Nextcloud is an open source content collaboration platform. From versions 0.7.0 to before 0.7.7, 0.8.0 to before 0.8.10, 0.9.0 to before 0.9.8, and 1.0.0 to before 1.0.4, an authenticated attacker with access to the Tables app may be able to execute arbitrary up to 20 bytes long SQL queries,...

CVE-2026-45722

Nextcloud is an open source content collaboration platform. From versions 0.9.0 to before 0.9.7, and 1.0.0 to before 1.0.2, a missing sanitization in the Tables app allowed a user with access to the tables app to perform a limited SQL injection in the ORDER BY statement of a query. Compared to...

[SECURITY] Fedora 43 Update: nextcloud-33.0.4-1.fc43

NextCloud gives you universal access to your files through a web interface or WebDAV. It also provides a platform to easily view & sync your contacts, calendars and bookmarks across all your devices and enables basic editing rig ht on the web. NextCloud is extendable via a simple but powerful API...

Fedora 43 : nextcloud (2026-e187104307)

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-e187104307 advisory. 33.0.4 Release Tenable has extracted the preceding description block directly from the Fedora security advisory. Note that Nessus has not tested for...

Fedora 44 : nextcloud (2026-30881a5be7)

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-30881a5be7 advisory. 33.0.4 Release Tenable has extracted the preceding description block directly from the Fedora security advisory. Note that Nessus has not tested for...

Poc-PoisonJar

RCE Nextcloud — Cache Poisoning → Pre-Auth RCE Reproducible p...

SUSE CVE-2026-45155

Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.7 and 33.0.0 to before 33.0.1, a missing access check on API level allowed to add unknown circles by their ID directly to other circles. Since circle IDs have 62^15 complexity by...

SUSE CVE-2026-45283

Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.2, and 33.0.0 to before 33.0.1, the fileslock app did not properly validate the ownership of files when processing DAV lock and unlock requests. An authenticated user could lock or...

CVE-2026-45282

A flaw was found in Nextcloud Server. An authenticated attacker, by knowing a share token and a document ID, could access attachments of link shares. This circumvents password protection or download restrictions, leading to the disclosure of sensitive information from attachments. Mitigation...

CVE-2026-45156

Nextcloud is an open source content collaboration platform. From versions 0.3.0 to before 3.1.0, 5.0.0 to before 5.1.0, and 6.0.0 to before 6.4.0, a missing signature verification in User OIDC allowed a malicious ID4me authority to identify as any user. This issue has been patched in versions...

SUSE CVE-2026-45157

Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.9, and 33.0.0 to before 33.0.3, when a malicious user has access to a file share of a user, they could use this share token to also access the chunking upload directly and see...

CVE-2026-45155

A flaw was found in Nextcloud Server. A missing access check at the API Application Programming Interface level could allow an authenticated attacker, who has access to a circle ID from another source, to add unknown circles to other circles. This could lead to the disclosure of circle membership...

CVE-2026-45283

A flaw was found in Nextcloud Server. An authenticated user could exploit this vulnerability to lock or unlock files belonging to other users by manipulating WebDAV Web Distributed Authoring and Versioning paths. This issue also led to the disclosure of lock tokens in error responses, potentially...

CVE-2026-45157

A flaw was found in Nextcloud Server. A malicious user with access to a file share could exploit this vulnerability by using the share token to directly access the chunking upload process. This allows the attacker to view temporary part files during ongoing uploads, leading to information...

CVE-2026-45810

A flaw was found in Nextcloud Server. An authenticated user with access to any file comment could exploit a missing relation check. This vulnerability allows the user to read the content of all comments within the system, leading to information disclosure. Mitigation Mitigation for this issue is...

CVE-2026-45691

A flaw was found in Nextcloud Server. An attacker could reuse a pre-two-factor authentication 2FA session cookie as a Bearer token. This allows them to authenticate against DAV endpoints, granting unauthorized read and write access and bypassing the mandatory two-factor authentication. Mitigation...

CVE-2026-45279

A flaw was found in Nextcloud Server. This vulnerability allows non-admin users to perform a path traversal when the lang variable is used in the template directory configuration. An attacker can exploit this to copy arbitrary files, subject to existing Unix permissions, into their own Nextcloud...

CVE-2026-45285

A flaw was found in Nextcloud. When a user shares a folder or file with a Nextcloud Team that includes an external member, the system automatically generates a public link for that external member. This link, which is not visible to the folder owner, grants the same permissions as the Team's...

CVE-2026-45281

A flaw was found in Nextcloud Server. An authenticated user, with knowledge of another user's principal URL, could exploit improper authorization controls to gain full access to that user's calendar. This allows the attacker to view and modify the victim's calendar, leading to unauthorized...