CVE-2025-27936 – github.com/mattermost/mattermost-plugin-msteams

Package

Manager: go
Name: github.com/mattermost/mattermost-plugin-msteams
Vulnerable Version: >=0 <2.1.0

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS: 0.00056 pctl0.17194

Details

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.

Metadata

Created: 2025-04-16T12:31:19Z
Modified: 2025-04-23T15:18:35Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/04/GHSA-2j87-p623-8cc2/GHSA-2j87-p623-8cc2.json
CWE IDs: ["CWE-208"]
Alternative ID: GHSA-2j87-p623-8cc2
Finding: F063
Auto approve: 1