Missing Authentication for Critical Function

Overview Affected versions of this package are vulnerable to Missing Authentication for Critical Function via the MSTeams plugin OAuth flow. An attacker can modify arbitrary posts by sending a crafted OAuth redirect URL. Remediation Upgrade github.com/mattermost/mattermost/server/public/model to...

CVE-2025-55073: Missing Authentication for Critical Function

Mattermost versions 10.11.x = 10.11.3, 10.5.x = 10.5.11, 10.12.x = 10.12.0 fail to validate the relationship between the post being updated and the MSTeams plugin OAuth flow which allows an attacker to edit arbitrary posts via a crafted MSTeams plugin OAuth redirect URL...

Mattermost 安全漏洞

Mattermost is an open source collaboration platform from Mattermost, Inc. in the United States. A security vulnerability exists in Mattermost versions 10.11.3 and prior to 10.11.x, 10.5.11 and prior to 10.5.x, and 10.12.0 and prior to 10.12.x. The vulnerability stems from an unvalidated post upda...

CVE-2025-27936

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...

Timing Attack

github.com/mattermost/mattermost-server is vulnerable to a Timing attack. The vulnerability is due to improper implementation of constant time comparison when comparing the MSTeams plugin webhook secret, allows an attacker to exploit timing differences in the comparison process to extract the...

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...

CVE-2025-27936

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...

CVE-2025-27936

CVE-2025-27936 (Mattermost/MS Teams plugin timing attack) : The connected advisory GO-2025-3618 reports a vulnerability in the Mattermost ecosystem where the MSTeams plugin (github.com/mattermost/mattermost-plugin-msteams) and related Mattermost Server versions are susceptible to an observable ti...

CVE-2025-27936 Webhook Secret Exposure via Timing attack in MSteams plugin

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...

CVE-2025-27936 Webhook Secret Exposure via Timing attack in MSteams plugin

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...

PT-2025-16571 · Mattermost · Mattermost Server +1

Name of the Vulnerable Software and Affected Versions: Mattermost Plugin MSTeams versions prior to 2.1.0 Mattermost Server versions 10.5.x through 10.5.1 Description: The issue allows an attacker to retrieve the webhook secret of the MSTeams plugin via a timing attack during webhook secret...

CVE-2025-27936: 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...

Launch of Resources from CWA 2402,2403 or 2405 may fail if MSTeams Citrix plugin is installed

Affected versions : CWA release 2402, 2403 or 2405 When launching a published Desktop users are presented with a grey window momentarily. This then closes but shows connected in connection center Application launches will simply fail but the below error will be observed in the event logs In the...

Jenkins MSTeams Webhook Trigger Plugin uses non-constant time webhook token comparison

Jenkins MSTeams Webhook Trigger Plugin 0.1.1 and earlier does not use a constant-time comparison when checking whether the provided and expected webhook token are equal. This could potentially allow attackers to use statistical methods to obtain a valid webhook token. As of publication of this...

GHSA-2XPQ-5952-38W3 Jenkins MSTeams Webhook Trigger Plugin uses non-constant time webhook token comparison

Jenkins MSTeams Webhook Trigger Plugin 0.1.1 and earlier does not use a constant-time comparison when checking whether the provided and expected webhook token are equal. This could potentially allow attackers to use statistical methods to obtain a valid webhook token. As of publication of this...

CVE-2023-46658

Jenkins MSTeams Webhook Trigger Plugin 0.1.1 and earlier uses a non-constant time comparison function when checking whether the provided and expected webhook token are equal, potentially allowing attackers to use statistical methods to obtain a valid webhook token...

CVE-2023-46658

Jenkins MSTeams Webhook Trigger Plugin 0.1.1 and earlier uses a non-constant time comparison function when checking whether the provided and expected webhook token are equal, potentially allowing attackers to use statistical methods to obtain a valid webhook token...

Code injection

Jenkins MSTeams Webhook Trigger Plugin 0.1.1 and earlier uses a non-constant time comparison function when checking whether the provided and expected webhook token are equal, potentially allowing attackers to use statistical methods to obtain a valid webhook token...

CVE-2023-46658

CVE-2023-46658 affects Jenkins MSTeams Webhook Trigger Plugin (versions 0.1.1 and earlier). The root cause is a non-constant time comparison when verifying the webhook token, which could enable attackers to use statistical methods to deduce a valid token. Public references (GHSA/NVD) describe the...

CVE-2023-46658

Jenkins MSTeams Webhook Trigger Plugin 0.1.1 and earlier uses a non-constant time comparison function when checking whether the provided and expected webhook token are equal, potentially allowing attackers to use statistical methods to obtain a valid webhook token...