Incorrect Authorization

Overview github.com/mattermost/mattermost/server/v8/channels/api4 is a platform for secure collaboration across the entire software development lifecycle Affected versions of this package are vulnerable to Incorrect Authorization in the role patch API. An attacker can gain elevated privileges by...

Insertion of Sensitive Information Into Sent Data

Overview github.com/mattermost/mattermost/server/v8/channels/api4 is a platform for secure collaboration across the entire software development lifecycle Affected versions of this package are vulnerable to Insertion of Sensitive Information Into Sent Data in the Remote Cluster PATCH API response...

CVE-2026-6739

Mattermost versions 11.6.x = 11.6.1, 11.5.x = 11.5.4, 10.11.x = 10.11.15, 10.11.x = 10.11.16 fail to require system-level permission when patching protected default system roles, which allows authenticated users with delegated user-management permissions to escalate privileges by altering built-i...

CVE-2026-7184 Mattermost Remote Cluster PATCH API Leaks Authentication Tokens

Mattermost versions 11.6.x = 11.6.1, 11.5.x = 11.5.4, 10.11.x = 10.11.15 fail to sanitize the Remote Cluster API response on PATCH operations, which allows authenticated users with the managesecureconnections permission to obtain remote cluster authentication tokens via a PATCH request to the...

CVE-2026-6739

Mattermost versions 11.6.x = 11.6.1, 11.5.x = 11.5.4, 10.11.x = 10.11.15, 10.11.x = 10.11.16 fail to require system-level permission when patching protected default system roles, which allows authenticated users with delegated user-management permissions to escalate privileges by altering built-i...

CVE-2026-6739

Mattermost vulnerability CVE-2026-6739 affects multiple releases: 11.6.x <= 11.6.1, 11.5.x <= 11.5.4, 10.11.x <= 10.11.15, and 10.11.x

CVE-2026-6739 Mattermost: Delegated admins could patch protected default system roles

Mattermost versions 11.6.x = 11.6.1, 11.5.x = 11.5.4, 10.11.x = 10.11.15, 10.11.x = 10.11.16 fail to require system-level permission when patching protected default system roles, which allows authenticated users with delegated user-management permissions to escalate privileges by altering built-i...

EUVD-2026-36499

Mattermost versions 11.6.x = 11.6.1, 11.5.x = 11.5.4, 10.11.x = 10.11.15, 10.11.x = 10.11.16 fail to require system-level permission when patching protected default system roles, which allows authenticated users with delegated user-management permissions to escalate privileges by altering built-i...

CVE-2026-46717: Incorrect Authorization

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 1.4.0 to before version 2.0.8, nezha's dashboard supports two user roles: RoleAdmin Role==0 and RoleMember Role==1. The notification routes POST /api/v1/notification and PATCH...

CVE-2026-6739: Incorrect Authorization

Mattermost versions 11.6.x = 11.6.1, 11.5.x = 11.5.4, 10.11.x = 10.11.15, 10.11.x = 10.11.16 fail to require system-level permission when patching protected default system roles, which allows authenticated users with delegated user-management permissions to escalate privileges by altering built-i...

PT-2026-48938

Name of the Vulnerable Software and Affected Versions Mattermost versions prior to 11.6.2 Mattermost versions prior to 11.5.5 Mattermost versions prior to 10.11.17 Description Authenticated users with delegated user-management permissions can escalate privileges by altering built-in role...

BIT-AUTHENTIK-2026-40172 authentik: Privilege Escalation via User PATCH: Superuser Group Assignment Bypasses enable_group_superuser

authentik is an open-source identity provider. In versions prior to 2025.12.5 and 2026.2.0 through 2026.2.2, the PATCH /api/v3/core/users/pk/ API allows a caller with changeuser on a target user to assign arbitrary groups through UserSerializer, including groups with issuperuser=True, without...

CVE-2026-42359

A bug in Apache Airflow's XCom PATCH endpoint "PATCH /api/v2/xcomEntries/key" allowed an authenticated UI/API user with XCom write permission on a Dag to set XCom entries under reserved key names e.g. "returnvalue" that the matching POST endpoint already validated against "FORBIDDENXCOMKEYS". The...

CVE-2026-42359: Deserialization of Untrusted Data

A bug in Apache Airflow's XCom PATCH endpoint PATCH /api/v2/xcomEntries/key allowed an authenticated UI/API user with XCom write permission on a Dag to set XCom entries under reserved key names e.g. returnvalue that the matching POST endpoint already validated against FORBIDDENXCOMKEYS. The...

CVE-2026-44832

Snipe-IT is an IT asset/license management system. Prior to 8.4.1, aAn authenticated user with only users.edit permission can escalate their own privileges to admin by sending a PATCH request to /api/v1/users/id with permissionsadmin=1. The API controller only strips the superuser key from the...

CVE-2026-44832: Improper Preservation of Permissions

Snipe-IT is an IT asset/license management system. Prior to 8.4.1, aAn authenticated user with only users.edit permission can escalate their own privileges to admin by sending a PATCH request to /api/v1/users/id with permissionsadmin=1. The API controller only strips the superuser key from the...

CVE-2026-40172: Improper Privilege Management

authentik is an open-source identity provider. In versions prior to 2025.12.5 and 2026.2.0-rc1 through 2026.2.2, the PATCH /api/v3/core/users/pk/ API allows a caller with changeuser on a target user to assign arbitrary groups through UserSerializer, including groups with issuperuser=True, without...

CVE-2026-8657

Versions of the package jsondiffpatch before 0.7.6 are vulnerable to Prototype Pollution via the jsondiffpatch.patch and jsondiffpatch/formatters/jsonpatch.patch APIs. An attacker can perform prototype pollution by supplying crafted delta or JSON Patch documents, as attacker-controlled property...

jsondiffpatch patch APIs are vulnerable to prototype pollution

Versions of the package jsondiffpatch before 0.7.6 are vulnerable to Prototype Pollution via the jsondiffpatch.patch and jsondiffpatch/formatters/jsonpatch.patch APIs. An attacker can perform prototype pollution by supplying crafted delta or JSON Patch documents, as attacker-controlled property...

GHSA-J4FX-XXWH-2485 jsondiffpatch patch APIs are vulnerable to prototype pollution

Versions of the package jsondiffpatch before 0.7.6 are vulnerable to Prototype Pollution via the jsondiffpatch.patch and jsondiffpatch/formatters/jsonpatch.patch APIs. An attacker can perform prototype pollution by supplying crafted delta or JSON Patch documents, as attacker-controlled property...