CVE-2026-3473

Mattermost versions 11.6.x = 11.6.0, 11.5.x = 11.5.3, 11.4.x = 11.4.4, 10.11.x = 10.11.14 fail to validate file ownership and access control, which allows an authenticated user to access and download files belonging to other users or teams via crafted Boards API requests using valid file IDs...

CVE-2026-42277

Onyx is an open-source AI platform. Prior to versions 3.0.9, 3.1.6, and 3.2.6, the GET /chat/file/fileid endpoint allows any authenticated user to download any other user's uploaded files by providing the file UUID. The endpoint verifies the caller is authenticated but never checks that the file...

CVE-2026-6970

authd prior to version 0.6.4 contains a logic error in primary group ID assignment that can lead to local privilege escalation. When a user's primary group ID GID differs from their UID, either because the account was created with authd prior to version 0.5.4 or because the primary group was...

CVE-2026-45283 Nextcloud: Files Lock app allows users to lock and unlock files of other users

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...

Authorization Bypass Through User-Controlled Key

Overview Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key via the Boards API when file ownership and access control are not properly validated. An attacker can gain unauthorized access to and download files belonging to other users or teams by...

CVE-2026-3473

Mattermost versions 11.6.x = 11.6.0, 11.5.x = 11.5.3, 11.4.x = 11.4.4, 10.11.x = 10.11.14 fail to validate file ownership and access control, which allows an authenticated user to access and download files belonging to other users or teams via crafted Boards API requests using valid file IDs...

CVE-2026-3473 Improper file ownership validation in the Boards API allows unauthorised file access

Mattermost versions 11.6.x = 11.6.0, 11.5.x = 11.5.3, 11.4.x = 11.4.4, 10.11.x = 10.11.14 fail to validate file ownership and access control, which allows an authenticated user to access and download files belonging to other users or teams via crafted Boards API requests using valid file IDs...

EUVD-2026-31429

Mattermost versions 11.6.x = 11.6.0, 11.5.x = 11.5.3, 11.4.x = 11.4.4, 10.11.x = 10.11.14 fail to validate file ownership and access control, which allows an authenticated user to access and download files belonging to other users or teams via crafted Boards API requests using valid file IDs...

CVE-2026-3473

Mattermost versions 11.6.x = 11.6.0, 11.5.x = 11.5.3, 11.4.x = 11.4.4, 10.11.x = 10.11.14 fail to validate file ownership and access control, which allows an authenticated user to access and download files belonging to other users or teams via crafted Boards API requests using valid file IDs...

PT-2026-42745

Mattermost versions 11.6.x = 11.6.0, 11.5.x = 11.5.3, 11.4.x = 11.4.4, 10.11.x = 10.11.14 fail to validate file ownership and access control, which allows an authenticated user to access and download files belonging to other users or teams via crafted Boards API requests using valid file IDs...

CVE-2026-25710

A flaw was found in plasma-login-manager. A compromised plasmalogin service account could exploit this vulnerability to change the ownership of arbitrary files on the system. This could lead to privilege escalation, allowing an attacker to gain unauthorized control over system files and potential...

CLSA-2026-1779122764 nano: Fix of CVE-2024-5742

CVE-2024-5742: emergencysave applied chmod/chown to a path after the descriptor was closed, allowing a symlink swap to redirect the ownership change to an attacker-controlled file - Backport of upstream commit 5e7a3c2e from nano v8.0, adapted to the 5.6.1 codebase writefile signature predates the...

Open WebUI: shared-chat branch ignores access_type, allowing unauthorized file deletion

Summary Any authenticated user can permanently delete files owned by other users via DELETE /api/v1/files/id when the target file is referenced in any shared chat. The hasaccesstofile authorization gate unconditionally grants access through its shared-chat branch. It checks neither the requesting...

CVE-2026-25710

The new upstream added a privileged D-Bus helper called plasmaloginauthhelper, which suffers from multiple issues, e.g.aA compromised plasmalogin service account can chown arbitrary files in the system...

CVE-2026-25710

The new upstream added a privileged D-Bus helper called plasmaloginauthhelper, which suffers from multiple issues, e.g.aA compromised plasmalogin service account can chown arbitrary files in the system...

CVE-2026-25710

The CVE-2026-25710 issue affects the plasmaloginauthhelper, a privileged D-Bus helper. A compromised plasmalogin service account can chown arbitrary files, enabling local privilege escalation with high impact on system confidentiality and integrity; availability is noted as high in the metrics. U...

Onyx 安全漏洞

Onyx is an open-source AI large model platform developed by Onyx. Vulnerabilities exist in versions prior to Onyx 3.0.9, 3.1.6, and 3.2.6. These vulnerabilities stem from the GET /chat/file/fileid endpoint, which validates the caller’s identity but does not check file ownership. This could allow...

Astra Linux - уязвимость в ansible

A flaw was discovered in Ansible. The ansible-core user module allows an unprivileged user to silently create or replace the contents of any file on any system path, and to take ownership of that file when a privileged user executes the user module against the unprivileged user’s home directory. ...

Placement of User into Incorrect Group

Overview github.com/canonical/authd/internal/users is an authentication daemon for external Broker Affected versions of this package are vulnerable to Placement of User into Incorrect Group in the process responsible for assigning primary group IDs when a user's primary group ID differs from thei...

CVE-2026-6970 authd Denial of Service and Local Privilege Escalation

authd prior to version 0.6.4 contains a logic error in primary group ID assignment that can lead to local privilege escalation. When a user's primary group ID GID differs from their UID, either because the account was created with authd prior to version 0.5.4 or because the primary group was...