PT-2026-99284

Name of the Vulnerable Software and Affected Versions capgo.app affected versions not specified Description The transfer app database function fails to delete or revalidate existing rows in channel permission overrides when transferring an app, its channels, versions, and related records to a...

PT-2026-99288

Name of the Vulnerable Software and Affected Versions capgo.app affected versions not specified Description The application fails to validate that principals within channel permission overrides are members of the organization. This allows authenticated app or organization administrators to grant...

CVE-2026-88860: Incorrect Authorization

Capgo fails to clean up channel permission overrides when a user's last organization role binding is deleted, leaving stale overrides active. Attackers can retain channel-specific permissions after their base RBAC access has been revoked to perform unauthorized actions like changing production OT...

CVE-2025-71388 stoatchat 20241213-1 Webhook Token Disclosure via Read Permissions

stoatchat delta/Revolt versions from 20241213-1 before 20250210-1 allow users with only ViewChannel read permission on a channel to fetch that channel's webhooks, including their tokens, because the webhook fetch endpoint checked for ViewChannel instead of ManageWebhooks. Using a retrieved token,...

EUVD-2025-210476

stoatchat delta/Revolt versions from 20241213-1 before 20250210-1 allow users with only ViewChannel read permission on a channel to fetch that channel's webhooks, including their tokens, because the webhook fetch endpoint checked for ViewChannel instead of ManageWebhooks. Using a retrieved token,...

PT-2026-54026

Capgo before 12.128.2 contains an authorization bypass vulnerability in the channel creation endpoint that allows authenticated users to overwrite existing channels by reusing their names. Attackers with app.create channel permission can exploit a logic mismatch between existence validation and...

GO-2026-5651 Mattermost doesn't check the create_post channel permission during post edit operations in github.com/mattermost/mattermost-server

Mattermost doesn't check the createpost channel permission during post edit operations in github.com/mattermost/mattermost-server. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing...

CVE-2026-3637 Mattermost fails to enforce create_post permission when editing posts

Mattermost versions 11.5.x = 11.5.1, 10.11.x = 10.11.13, 11.4.x = 11.4.3 fail to check the createpost channel permission during post edit operations which allows an authenticated attacker with revoked posting privileges to modify their existing posts via direct API requests to the post update and...

PT-2022-24804 · Unknown · Matrix-Appservice-Irc

Name of the Vulnerable Software and Affected Versions: matrix-appservice-irc versions prior to 0.35.0 Description: The issue allows attackers to specify a specific string of characters, which would confuse the bridge into combining an attacker-owned channel and an existing channel, allowing them ...