16 matches found
Authorization Bypass Through User-Controlled Key
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 Authorization Bypass Through User-Controlled Key via the incoming webhook process. An...
Authorization Bypass Through User-Controlled Key
Overview Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key via the incoming webhook process. An attacker can impersonate another user and create posts or direct messages attributed to them by crafting specific webhook configurations and payloads...
Authorization Bypass Through User-Controlled Key
Overview Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key via the incoming webhook process. An attacker can impersonate another user and create posts or direct messages attributed to them by crafting specific webhook configurations and payloads...
Authorization Bypass Through User-Controlled Key
Overview github.com/mattermost/mattermost/server/channels/app is a private-cloud Slack alternative Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key via the incoming webhook process. An attacker can impersonate another user and create posts or...
EUVD-2026-43308
Mattermost versions 11.7.x = 11.7.2, 11.6.x = 11.6.4, 10.11.x = 10.11.19 fail to validate that an assigned incoming webhook user has access to the target team or channel, which allows a requester with webhook management permissions to create posts or direct messages attributed to another user via...
CVE-2026-9708 Incoming webhook user attribution via unvalidated webhook owner
Mattermost versions 11.7.x = 11.7.2, 11.6.x = 11.6.4, 10.11.x = 10.11.19 fail to validate that an assigned incoming webhook user has access to the target team or channel, which allows a requester with webhook management permissions to create posts or direct messages attributed to another user via...
CVE-2026-9708
Mattermost vulnerable versions (11.7.x <= 11.7.2, 11.6.x <= 11.6.4, 10.11.x
CVE-2026-9708 Incoming webhook user attribution via unvalidated webhook owner
Mattermost versions 11.7.x = 11.7.2, 11.6.x = 11.6.4, 10.11.x = 10.11.19 fail to validate that an assigned incoming webhook user has access to the target team or channel, which allows a requester with webhook management permissions to create posts or direct messages attributed to another user via...
PT-2026-57664
Mattermost versions 11.7.x = 11.7.2, 11.6.x = 11.6.4, 10.11.x = 10.11.19 fail to validate that an assigned incoming webhook user has access to the target team or channel, which allows a requester with webhook management permissions to create posts or direct messages attributed to another user via...
CVE-2026-9708: Authorization Bypass Through User-Controlled Key
Mattermost versions 11.7.x = 11.7.2, 11.6.x = 11.6.4, 10.11.x = 10.11.19 fail to validate that an assigned incoming webhook user has access to the target team or channel, which allows a requester with webhook management permissions to create posts or direct messages attributed to another user via...
EUVD-2019-11400
Malware in sbrugna...
CVE-2025-1521
CVE-2025-1521 concerns PostHog's slack_incoming_webhook processing. The vulnerability stems from inadequate validation of a URI before accessing resources, enabling a network-based SSRF that can disclose sensitive information and potentially execute code in the service account context. The initia...
CVE-2019-20863
An issue was discovered in Mattermost Server before 5.13.0. Incoming webhook creation is not properly restricted...
Design/Logic Flaw
An issue was discovered in Mattermost Server before 5.13.0. Incoming webhook creation is not properly restricted...