Mattermost fails to properly restrict access to archived channel search API

Mattermost versions 11 fail to properly restrict access to archived channel search API which allows guest users to discover archived public channels via the /api/v4/teams/teamid/channels/searcharchived endpoint...

EUVD-2025-186558

Mattermost fails to properly restrict access to archived channel search API...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization via the /api/v4/teams/teamid/channels/searcharchived endpoint. An attacker can access information about archived public channels by sending crafted requests as a guest user. Remediation Upgrade...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization via the /api/v4/teams/teamid/channels/searcharchived endpoint. An attacker can access information about archived public channels by sending crafted requests as a guest user. Remediation Upgrade...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization via the /api/v4/teams/teamid/channels/searcharchived endpoint. An attacker can access information about archived public channels by sending crafted requests as a guest user. Remediation Upgrade...

GHSA-J6GG-R5JC-47CM Mattermost fails to properly restrict access to archived channel search API

Mattermost versions 11 fail to properly restrict access to archived channel search API which allows guest users to discover archived public channels via the /api/v4/teams/teamid/channels/searcharchived endpoint...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization via the /api/v4/teams/teamid/channels/searcharchived endpoint. An attacker can access information about archived public channels by sending crafted requests as a guest user. Remediation Upgrade...

CVE-2025-11776

Mattermost versions 11 fail to properly restrict access to archived channel search API which allows guest users to discover archived public channels via the /api/v4/teams/teamid/channels/searcharchived endpoint...

CVE-2025-11776

Mattermost versions 11 fail to properly restrict access to archived channel search API which allows guest users to discover archived public channels via the /api/v4/teams/teamid/channels/searcharchived endpoint...

CVE-2025-11776

Mattermost CVE-2025-11776 affects Mattermost Server versions earlier than 11.0.0. A flaw in access control on the archived channel search API (/api/v4/teams/{team_id}/channels/search_archived) allows guest users to discover archived public channels. Root cause: insufficient restrictions on archiv...

CVE-2025-11776 Guest user can discover archived public channels

Mattermost versions 11 fail to properly restrict access to archived channel search API which allows guest users to discover archived public channels via the /api/v4/teams/teamid/channels/searcharchived endpoint...

CVE-2025-11776 Guest user can discover archived public channels

Mattermost versions 11 fail to properly restrict access to archived channel search API which allows guest users to discover archived public channels via the /api/v4/teams/teamid/channels/searcharchived endpoint...

SUSE CVE-2025-40181

In the Linux kernel, the following vulnerability has been resolved: x86/kvm: Force legacy PCI hole to UC when overriding MTRRs for TDX/SNP When running as an SNP or TDX guest under KVM, force the legacy PCI hole, i.e. memory between Top of Lower Usable DRAM and 4GiB, to be mapped as UC via a forc...

SUSE CVE-2025-40184

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Fix debug checking for np-guests using huge mappings When running with transparent huge pages and CONFIGNVHEEL2DEBUG then the debug checking in asserthostsharedguest fails on the launch of an np-guest. This WARNON...

Mattermost 安全漏洞

Mattermost is an open source collaboration platform from Mattermost, Inc. in the United States. A security vulnerability exists in versions prior to Mattermost 11 that stems from a failure to properly restrict access to the archive channel search API, which could lead to the discovery of archived...

CVE-2025-40181

In the Linux kernel, the following vulnerability has been resolved: x86/kvm: Force legacy PCI hole to UC when overriding MTRRs for TDX/SNP When running as an SNP or TDX guest under KVM, force the legacy PCI hole, i.e. memory between Top of Lower Usable DRAM and 4GiB, to be mapped as UC via a forc...

CVE-2025-47913

SSH clients receiving SSHAGENTSUCCESS when expecting a typed response will panic and cause early termination of the client process...

USN-7862-3 linux-xilinx-zynqmp vulnerability

Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered that the Linux kernel contained insufficient branch predictor isolation between a guest and a userspace hypervisor for certain processors. This flaw is known as VMSCAPE. An attacker in a guest VM could possibly use this t...

USN-7862-3: Linux kernel (Xilinx ZynqMP) vulnerability

Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered that the Linux kernel contained insufficient branch predictor isolation between a guest and a userspace hypervisor for certain processors. This flaw is known as VMSCAPE. An attacker in a guest VM could possibly use this t...

USN-7861-3: Linux kernel vulnerabilities

Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered that the Linux kernel contained insufficient branch predictor isolation between a guest and a userspace hypervisor for certain processors. This flaw is known as VMSCAPE. An attacker in a guest VM could possibly use this t...