CVE-2026-20796 Time-of-check time-of-use vulnerability in common teams API

Mattermost versions 10.11.x = 10.11.9 fail to properly validate channel membership at the time of data retrieval which allows a deactivated user to learn team names they should not have access to via a race condition in the /commonteams API endpoint.. Mattermost Advisory ID: MMSA-2025-00549...

CVE-2026-20796 Time-of-check time-of-use vulnerability in common teams API

Mattermost versions 10.11.x = 10.11.9 fail to properly validate channel membership at the time of data retrieval which allows a deactivated user to learn team names they should not have access to via a race condition in the /commonteams API endpoint.. Mattermost Advisory ID: MMSA-2025-00549...

CVE-2026-20796

Mattermost CVE-2026-20796 affects version 10.11.x up to 10.11.9, due to improper validation of channel membership at data retrieval. A race condition in the /common_teams API endpoint can allow a deactivated user to learn team names they should not access. Root cause: insufficient validation duri...

CVE-2026-20796 Time-of-check time-of-use vulnerability in common teams API

Mattermost versions 10.11.x = 10.11.9 fail to properly validate channel membership at the time of data retrieval which allows a deactivated user to learn team names they should not have access to via a race condition in the /commonteams API endpoint.. Mattermost Advisory ID: MMSA-2025-00549...

PT-2026-7984

Name of the Vulnerable Software and Affected Versions Mattermost versions 10.11.0 through 10.11.9 Description Mattermost versions 10.11.0 through 10.11.9 do not properly validate channel membership when retrieving data, potentially allowing a deactivated user to learn team names they should not...

Ryan Liles, master of technical diplomacy

Cisco Talos is back with another inside look at the people who keep the internet safe. This time, Amy chats with Ryan Liles, who bridges the gap between Cisco's product teams and the third-party testing labs that put Cisco products through their paces. Ryan pulls back the curtain on the delicate...

80% of Fortune 500 use active AI Agents: Observability, governance, and security shape the new frontier

Today, Microsoft is releasing the new Cyber Pulse report to provide leaders with straightforward, practical insights and guidance on new cybersecurity risks. One of today’s most pressing concerns is the governance of AI and autonomous agents. AI agents are scaling faster than some companies can s...

Fake Microsoft Teams Billing Phishing Alerts Reach 6,135 Users via 12,866 Emails

Scammers are abusing Microsoft Teams invitations to send fake billing notices, with 12,866 emails reaching around 6,135 users in a phone-based phishing campaign...

How Cybercrime Markets Launder Breach Proceeds and What Security Teams Miss

Explore how cybercrime markets turn stolen data into laundered funds using dollar‑pegged assets, mixers and exchanges-and why tracking BTC USDT price and stablecoin flows now matters for security, fraud and AML teams...

CVE-2023-45370

An issue was discovered in the SportsTeams extension for MediaWiki before 1.35.12, 1.36.x through 1.39.x before 1.39.5, and 1.40.x before 1.40.1. SportsTeams: Special:SportsManagerLogo and Special:SportsTeamsManagerLogo do not check for the sportsteamsmanager user right, and thus an attacker may ...

CVE-2022-26655

Pexip Infinity 27.x before 27.3 has Improper Input Validation. The client API allows remote attackers to trigger a software abort via a gateway call into Teams...

CVE-2023-45756

Unauth. Reflected Cross-Site Scripting XSS vulnerability in Spider Teams ApplyOnline – Application Form Builder and Manager plugin = 2.5.2 versions...

CVE-2024-41138

A library injection vulnerability exists in the com.microsoft.teams2.modulehost.app helper app of Microsoft Teams work or school 24046.2813.2770.1094 for macOS. A specially crafted library can leverage Teams's access privileges, leading to a permission bypass. A malicious application could inject...

AI & Humans: Making the Relationship Work

Leaders of many organizations are urging their teams to adopt agentic AI to improve efficiency, but are finding it hard to achieve any benefit. Managers attempting to add AI agents to existing human teams may find that bots fail to faithfully follow their instructions, return pointless or obvious...

SUSE CVE-2025-12559

Mattermost versions 11.0.x = 11.0.2, 10.12.x = 10.12.1, 10.11.x = 10.11.4, 10.5.x = 10.5.12 fail to sanitize team email addresses to be visible only to Team Admins, which allows any authenticated user to view team email addresses via the GET /api/v4/channels/channelid/commonteams endpoint...

Expanding the Zero Critical Club to set a new standard for AppSec and SecOps teams

We are introducing Zero Code Criticals and Zero Time to Respond clubs to give every team a clear north star for secure development and rapid response...

Get Executives on board with managing Cyber Risk

Learn how the 2025 Trend Micro Defenders Survey Report helps paint a clear picture of how security teams are looking to work with executive leaders to manage cyber risk...

CVE-2025-49088

Pexip Infinity 32.0 through 37.1 before 37.2, in certain configurations of OTJ One Touch Join for Teams SIP Guest Join, has Improper Input Validation in the OTJ service, allowing a remote attacker to trigger a software abort via a crafted calendar invite, leading to a denial of service...

EUVD-2025-205365

Pexip Infinity 32.0 through 37.1 before 37.2, in certain configurations of OTJ One Touch Join for Teams SIP Guest Join, has Improper Input Validation in the OTJ service, allowing a remote attacker to trigger a software abort via a crafted calendar invite, leading to a denial of service...

CVE-2025-49088

Pexip Infinity 32.0 through 37.1 before 37.2, in certain configurations of OTJ One Touch Join for Teams SIP Guest Join, has Improper Input Validation in the OTJ service, allowing a remote attacker to trigger a software abort via a crafted calendar invite, leading to a denial of service...