Headline
GHSA-2j87-p623-8cc2: Mattermost vulnerable to Observable Timing Discrepancy
Mattermost Plugin MSTeams versions <2.1.0 and Mattermost Server versions 10.5.x <=10.5.1 with the MS Teams plugin enabled fail to perform constant time comparison on a MSTeams plugin webhook secret which allows an attacker to retrieve the webhook secret of the MSTeams plugin via a timing attack during webhook secret comparison.
- GitHub Advisory Database
- GitHub Reviewed
- CVE-2025-27936
Mattermost vulnerable to Observable Timing Discrepancy
Moderate severity GitHub Reviewed Published Apr 16, 2025 to the GitHub Advisory Database • Updated Apr 16, 2025
Package
gomod github.com/mattermost/mattermost-plugin-msteams (Go)
Affected versions
<= 1.15.0
gomod github.com/mattermost/mattermost/server/v8 (Go)
>= 10.5.0, < 10.5.2
< 8.0.0-20250314142426-c049748b8863
10.5.2
8.0.0-20250314142426-c049748b8863
Published to the GitHub Advisory Database
Apr 16, 2025
Last updated
Apr 16, 2025