Improper Access Control Affecting github.com/mattermost/mattermost/server/platform/services/sharedchannel package, versions <9.5.7 >=9.7.0 <9.7.6 >=9.8.0 <9.8.2 >=9.9.0 <9.9.1
Threat Intelligence
EPSS
0.05% (16th
percentile)
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Test your applications- Snyk ID SNYK-GOLANG-GITHUBCOMMATTERMOSTMATTERMOSTSERVERPLATFORMSERVICESSHAREDCHANNEL-7577984
- published 2 Aug 2024
- disclosed 1 Aug 2024
- credit Juho Forsén
Introduced: 1 Aug 2024
CVE-2024-39839 Open this link in a new tabHow to fix?
Upgrade github.com/mattermost/mattermost/server/platform/services/sharedchannel to version 9.5.7, 9.7.6, 9.8.2, 9.9.1 or higher.
Overview
Affected versions of this package are vulnerable to Improper Access Control due to the improper validation of user input in the remote username setting process. An attacker can manipulate the username to an arbitrary value by exploiting the lack of proper input sanitization when shared channels are enabled.