Incorrect Authorization Affecting github.com/mattermost/mattermost/server/channels/app package, versions <10.11.11>=11.2.0-rc1 <11.2.3>=11.3.0-rc1 <11.3.1


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.17% (7th percentile)

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  • Snyk IDSNYK-GOLANG-GITHUBCOMMATTERMOSTMATTERMOSTSERVERCHANNELSAPP-15702066
  • published20 Mar 2026
  • disclosed16 Mar 2026
  • credit0x7oda7123

Introduced: 16 Mar 2026

CVE-2026-24692  (opens in a new tab)
CWE-863  (opens in a new tab)

How to fix?

Upgrade github.com/mattermost/mattermost/server/channels/app to version 10.11.11, 11.2.3, 11.3.1 or higher.

Overview

github.com/mattermost/mattermost/server/channels/app is a private-cloud Slack alternative

Affected versions of this package are vulnerable to Incorrect Authorization via the search API endpoints. An attacker can gain unauthorized access to posts and files in channels by sending crafted search API requests as a guest user without read permissions.

CVSS Base Scores

version 4.0
version 3.1