The Dark Side of the Web: Towards Understanding Various Data Sources in Cyber Threat Intelligence

Cyber threats have become increasingly prevalent and sophisticated. Prior work has extracted actionable cyber threat intelligence CTI, such as indicators of compromise, tactics, techniques, and procedures TTPs, or threat feeds from various sources: open source data e.g., social networks, internal...

CVE-2025-27571

Mattermost versions 10.5.x = 10.5.1, 10.4.x = 10.4.3, 9.11.x = 9.11.9 fail to check the "Allow Users to View Archived Channels" configuration when fetching channel metadata of a post from archived channels, which allows authenticated users to access such information when a channel is archived...

Unauthorized Access

github.com/mattermost/mattermost-server is vulnerable to Unauthorized Access. The vulnerability is due to improper access control due to a failure to enforce the "Allow Users to View Archived Channels" setting when fetching metadata from archived channels, which allows an attacker to access...

SUSE CVE-2025-2564

Mattermost versions 10.5.x = 10.5.1, 10.4.x = 10.4.3, 9.11.x = 9.11.9 fail to properly enforce the 'Allow users to view/update archived channels' System Console setting, which allows authenticated users to view members and member information of archived channels even when this setting is disabled...

SUSE CVE-2025-27571

Mattermost versions 10.5.x = 10.5.1, 10.4.x = 10.4.3, 9.11.x = 9.11.9 fail to check the "Allow Users to View Archived Channels" configuration when fetching channel metadata of a post from archived channels, which allows authenticated users to access such information when a channel is archived...

SUSE CVE-2025-46393

In multispectral MIFF image processing in ImageMagick before 7.1.1-44, packetsize is mishandled related to the rendering of all channels in an arbitrary order...

Improper Access Control

github.com/mattermost/mattermost-server is vulnerable to Improper Access Control. The vulnerability is due to improper enforcement of the 'Allow users to view/update archived channels' system setting, which allows authenticated users to access member information in archived channels even when the...

Mattermost Server 9.11.x < 9.11.10 / 10.4.x < 10.4.4 / 10.5.x < 10.5.2 / 10.6.0 (MMSA-2025-00436)

The version of Mattermost Server installed on the remote host is prior to 9.11.10, 10.4.4, or 10.5.2 / 10.6.0. It is, therefore, affected by a vulnerability as referenced in the MMSA-2025-00436 advisory. - Mattermost versions 10.5.x = 10.5.1, 10.4.x = 10.4.3, 9.11.x = 9.11.9 fail to properly...

Mattermost Server 9.11.x < 9.11.10 / 10.4.x < 10.4.4 / 10.5.x < 10.5.2 / 10.6.0 (MMSA-2025-00452)

The version of Mattermost Server installed on the remote host is prior to 9.11.10, 10.4.4, or 10.5.2 / 10.6.0. It is, therefore, affected by a vulnerability as referenced in the MMSA-2025-00452 advisory. - Mattermost versions 10.5.x = 10.5.1, 10.4.x = 10.4.3, 9.11.x = 9.11.9 fail to check the All...

The vulnerability of Fortinet’s software products lies in the insufficient restriction of communication channels for specific endpoints, which allows attackers to carry out MITM attacks.

The vulnerability of Fortinet software products is related to insufficient restrictions on communication channels for specified endpoints. Exploiting this vulnerability allows a remote attacker to carry out a Middleware-In-The-Middle MITM attack...

Exposure of Sensitive Information Through Metadata

Overview github.com/mattermost/mattermost/server/channels/app is a private-cloud Slack alternative Affected versions of this package are vulnerable to Exposure of Sensitive Information Through Metadata when executing the UpdateChannelBookmark function, due to improper handling of user permissions...

Incorrect Implementation of Authentication Algorithm

Overview github.com/mattermost/mattermost/server/channels/app is a private-cloud Slack alternative Affected versions of this package are vulnerable to Incorrect Implementation of Authentication Algorithm due to persisting authentication data in a cache when performing ConvertUserToBot. A user who...

Mattermost Information Disclosure Vulnerability (CNVD-2025-11083)

Mattermost is an open source collaboration platform from Mattermost, Inc. in the United States. Mattermost suffers from an information disclosure vulnerability that can be exploited by an attacker to obtain sensitive information in archived channels...

Guillotine: Hypervisors for Isolating Malicious AIs

As AI models become more embedded in critical sectors like finance, healthcare, and the military, their inscrutable behavior poses ever-greater risks to society. To mitigate this risk, we propose Guillotine, a hypervisor architecture for sandboxing powerful AI models -- models that, by accident o...

A Security Framework for General Blockchain Layer 2 Protocols

Layer 2 L2 solutions are the cornerstone of blockchain scalability, enabling high-throughput and low-cost interactions by shifting execution off-chain while maintaining security through interactions with the underlying ledger. Despite their common goals, the principal L2 paradigms -- payment...

CVE-2025-32946

This vulnerability allows any attacker to add playlists to a different user’s channel using the ActivityPub protocol. The vulnerable code sets the owner of the new playlist to be the user who performed the request, and then sets the associated channel to the channel ID supplied by the request,...

Incorrect Authorization

Overview github.com/mattermost/mattermost/server/channels/app is a private-cloud Slack alternative Affected versions of this package are vulnerable to Incorrect Authorization in the SessionHasPermissionToChannel function, even when the "Allow users to view archived channels" System Console settin...

Mattermost Incorrect Authorization vulnerability

Mattermost versions 10.5.x = 10.5.1, 10.4.x = 10.4.3, 9.11.x = 9.11.9 fail to properly enforce the 'Allow users to view/update archived channels' System Console setting, which allows authenticated users to view members and member information of archived channels even when this setting is disabled...

CVE-2025-2564

Mattermost versions 10.5.x = 10.5.1, 10.4.x = 10.4.3, 9.11.x = 9.11.9 fail to properly enforce the 'Allow users to view/update archived channels' System Console setting, which allows authenticated users to view members and member information of archived channels even when this setting is disabled...

CVE-2025-2564 Unauthorized View Access to Archived Channel Member Info

Mattermost versions 10.5.x = 10.5.1, 10.4.x = 10.4.3, 9.11.x = 9.11.9 fail to properly enforce the 'Allow users to view/update archived channels' System Console setting, which allows authenticated users to view members and member information of archived channels even when this setting is disabled...