Stable Channel Update for Desktop

The Stable channel has been updated to 134.0.6998.177/.178 for Windows which will roll out over the coming days/weeks. A full list of changes in this build is available in the Log. Extended stable channel has been updated to 134.0.6998.178 for Windows and will roll out over coming days/weeks...

CVE-2025-30609

creationtimestamp| type| source ---|---|--- 2025-03-24 16:43:45+00:00| seen| https://t.me/cvedetector/20960...

CVE-2025-27933

Mattermost versions 10.4.x = 10.4.2, 10.3.x = 10.3.3, 9.11.x = 9.11.8 fail to fail to enforce channel conversion restrictions, which allows members with permission to convert public channels to private ones to also convert private ones to public...

OESA-2025-1322 firefox security update

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability. %if 0 %global mozdebugprefix /lib/debug %global mozdebugdir /lib/debug/ %global unamem %uname -m %global symbolsfilename -.en-US.-%uname.crashreporter-symbols.zip %global symbolsfilepath...

Missing Authentication for Critical Function

Overview Affected versions of this package are vulnerable to Missing Authentication for Critical Function due to search APIs including user search, channel search, and team search failing to enforce multifactor authentication. Remediation Upgrade...

Missing Authentication for Critical Function

Overview github.com/mattermost/mattermost/server/v8/channels/api4 is a platform for secure collaboration across the entire software development lifecycle Affected versions of this package are vulnerable to Missing Authentication for Critical Function due to search APIs including user search,...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization due to improper enforcement of channel conversion restrictions. An attacker can exploit this flaw to change channel visibility settings without proper authorization by manipulating channel settings. Remediation...

Incorrect Authorization

Overview github.com/mattermost/mattermost/server/v8/channels/api4 is a platform for secure collaboration across the entire software development lifecycle Affected versions of this package are vulnerable to Incorrect Authorization when an admin user adds itself to a private channel by clicking a...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization when an admin user adds itself to a private channel by clicking a permalink. Remediation Upgrade github.com/mattermost/mattermost/server/channels/api4 to version 9.11.9-rc1 or higher. References - GitHub Commit...

GHSA-CW7Q-5CGC-H3H9 Mattermost fail to prompt for explicit approval before adding a team admin to a private channel

Mattermost versions 9.11.x = 9.11.8 fail to prompt for explicit approval before adding a team admin to a private channel, which team admins to joining private channels via crafted permalink links without explicit consent from them...

GHSA-H5V9-XW2G-7HRQ Mattermost allows members with permission to convert public channels to private and convert private to public

Mattermost versions 10.4.x = 10.4.2, 10.3.x = 10.3.3, 9.11.x = 9.11.8 fail to to enforce channel conversion restrictions, which allows members with permission to convert public channels to private ones to also convert private ones to public...

Mattermost fail to prompt for explicit approval before adding a team admin to a private channel

Mattermost versions 9.11.x = 9.11.8 fail to prompt for explicit approval before adding a team admin to a private channel, which team admins to joining private channels via crafted permalink links without explicit consent from them...

Mattermost allows members with permission to convert public channels to private and convert private to public

Mattermost versions 10.4.x = 10.4.2, 10.3.x = 10.3.3, 9.11.x = 9.11.8 fail to to enforce channel conversion restrictions, which allows members with permission to convert public channels to private ones to also convert private ones to public...

Missing Authentication for Critical Function

Overview github.com/mattermost/mattermost/server/v8/channels/web is a platform for secure collaboration across the entire software development lifecycle Affected versions of this package are vulnerable to Missing Authentication for Critical Function due to servePluginRequest failing to enforce...

CVE-2025-27715

Mattermost versions 9.11.x = 9.11.8 fail to prompt for explicit approval before adding a team admin to a private channel, which team admins to joining private channels via crafted permalink links without explicit consent from them...

CVE-2025-27933

Mattermost versions 10.4.x = 10.4.2, 10.3.x = 10.3.3, 9.11.x = 9.11.8 fail to fail to enforce channel conversion restrictions, which allows members with permission to convert public channels to private ones to also convert private ones to public...

CVE-2025-30179

Mattermost versions 10.4.x = 10.4.2, 10.3.x = 10.3.3, 9.11.x = 9.11.8 fail to enforce MFA on certain search APIs, which allows authenticated attackers to bypass MFA protections via user search, channel search, or team search queries...

CVE-2025-27933 Unauthorized Private-to-Public Channel Conversion

Mattermost versions 10.4.x = 10.4.2, 10.3.x = 10.3.3, 9.11.x = 9.11.8 fail to fail to enforce channel conversion restrictions, which allows members with permission to convert public channels to private ones to also convert private ones to public...

CVE-2025-27933

Mattermost CVE-2025-27933 affects Mattermost Server 9.11.x <= 9.11.8, 10.3.x <= 10.3.3, and 10.4.x

CVE-2025-27933 Unauthorized Private-to-Public Channel Conversion

Mattermost versions 10.4.x = 10.4.2, 10.3.x = 10.3.3, 9.11.x = 9.11.8 fail to fail to enforce channel conversion restrictions, which allows members with permission to convert public channels to private ones to also convert private ones to public...