CVE-2026-21388 Unbounded Request Body Read in MS Teams Plugin {{/lifecycle}} Webhook Endpoint

Mattermost Plugins versions =2.3.1 fail to limit the request body size on the /lifecycle webhook endpoint which allows an authenticated attacker to cause memory exhaustion and denial of service via sending an oversized JSON payload. Mattermost Advisory ID: MMSA-2026-00610...

CVE-2026-21388

CVE-2026-21388 affects Mattermost Plugins versions

CVE-2026-39355

Genealogy is a family tree PHP application. Prior to 5.9.1, a critical broken access control vulnerability in the genealogy application allows any authenticated user to transfer ownership of arbitrary non-personal teams to themselves. This enables complete takeover of other users’ team workspaces...

PT-2026-31611

Name of the Vulnerable Software and Affected Versions Palo Alto Cortex XSOAR and Cortex XSIAM versions prior to 1.5.52 Description A flaw in the Microsoft Teams integration for Cortex XSOAR and Cortex XSIAM allows attackers to access and modify sensitive data without authentication. The integrati...

CVE-2026-39355

Genealogy is a family tree PHP application. Prior to 5.9.1, a critical broken access control vulnerability in the genealogy application allows any authenticated user to transfer ownership of arbitrary non-personal teams to themselves. This enables complete takeover of other users’ team workspaces...

CVE-2026-39355 Genealogy is Missing Authorization in `TeamController::transferOwnership()` Allows Any Authenticated User to Hijack Any Team (Broken Access Control)

Genealogy is a family tree PHP application. Prior to 5.9.1, a critical broken access control vulnerability in the genealogy application allows any authenticated user to transfer ownership of arbitrary non-personal teams to themselves. This enables complete takeover of other users’ team workspaces...

CVE-2026-39355

CVE-2026-39355 affects the Genealogy PHP application. Before version 5.9.1, a broken access control in TeamController::transferOwnership() lets any authenticated user transfer ownership of arbitrary non-personal teams to themselves, enabling takeover of team workspaces and access to associated da...

EUVD-2026-19865

Genealogy is a family tree PHP application. Prior to 5.9.1, a critical broken access control vulnerability in the genealogy application allows any authenticated user to transfer ownership of arbitrary non-personal teams to themselves. This enables complete takeover of other users’ team workspaces...

CVE-2026-39355

Genealogy is a family tree PHP application. Prior to 5.9.1, a critical broken access control vulnerability in the genealogy application allows any authenticated user to transfer ownership of arbitrary non-personal teams to themselves. This enables complete takeover of other users’ team workspaces...

PT-2026-30977

Genealogy is a family tree PHP application. Prior to 5.9.1, a critical broken access control vulnerability in the genealogy application allows any authenticated user to transfer ownership of arbitrary non-personal teams to themselves. This enables complete takeover of other users’ team workspaces...

Why Security Researchers and Red Teams Are Turning to Workflow Automation

Security researchers and red teams adopt workflow automation to cut alert fatigue, enrich data, and scale operations across SOC, intel and recon tasks...

GHSA-P464-M8X6-VHV8 OpenClaw: MS Teams webhook parses body before JWT validation, enabling unauthenticated resource exhaustion

Summary MS Teams webhook parses body before JWT validation, enabling unauthenticated resource exhaustion Current Maintainer Triage - Status: open - Normalized severity: medium - Assessment: v2026.3.28 still parses Teams JSON after only a Bearer-prefix gate and before real JWT validation, and the...

OpenClaw: MS Teams webhook parses body before JWT validation, enabling unauthenticated resource exhaustion

Summary MS Teams webhook parses body before JWT validation, enabling unauthenticated resource exhaustion Current Maintainer Triage - Status: open - Normalized severity: medium - Assessment: v2026.3.28 still parses Teams JSON after only a Bearer-prefix gate and before real JWT validation, and the...

Denial of Service (DoS)

Overview openclaw is a 🦞 OpenClaw — Personal AI Assistant Affected versions of this package are vulnerable to Denial of Service DoS via the MS Teams webhook process. An attacker can cause resource exhaustion by sending unauthenticated requests that are parsed before proper JWT validation. Details...

Denial of Service (DoS)

Overview @openclaw/msteams is an OpenClaw Microsoft Teams channel plugin Affected versions of this package are vulnerable to Denial of Service DoS via the MS Teams webhook process. An attacker can cause resource exhaustion by sending unauthenticated requests that are parsed before proper JWT...

GHSA-CHFM-XGC4-47RJ OpenClaw: MSTeams thread history bypasses sender allowlist via Graph API

Summary MSTeams thread history bypasses sender allowlist via Graph API Current Maintainer Triage - Status: open - Normalized severity: medium - Assessment: Real in shipped v2026.3.28 MS Teams because Graph-fetched thread history bypasses sender allowlists, with unreleased mainline filtering fix...

OpenClaw: MSTeams thread history bypasses sender allowlist via Graph API

Summary MSTeams thread history bypasses sender allowlist via Graph API Current Maintainer Triage - Status: open - Normalized severity: medium - Assessment: Real in shipped v2026.3.28 MS Teams because Graph-fetched thread history bypasses sender allowlists, with unreleased mainline filtering fix...

How to Configure File Version Protection

Purpose This article describes how to configure Veeam Data Cloud for Microsoft 365 and Veeam Backup for Microsoft 365 to protect only the latest version of SharePoint, OneDrive, and Teams files, helping organizations mitigate Microsoft 365 throttling risks, reduce backup processing time, and...

EUVD-2026-17395

OpenClaw before 2026.3.8 contains a sender allowlist bypass vulnerability in its Microsoft Teams plugin that allows unauthorized senders to bypass intended authorization checks. When a team/channel route allowlist is configured with an empty groupAllowFrom parameter, the message handler synthesiz...

GHSA-XG59-F45V-9R9J Duplicate Advisory: OpenClaw's MS Teams sender allowlist bypass when route allowlist is configured and sender allowlist is empty

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-g7cr-9h7q-4qxq. This link is maintained to preserve external references. Original Description OpenClaw before 2026.3.8 contains a sender allowlist bypass vulnerability in its Microsoft Teams plugin that allows...