Missing Authorization

Overview Affected versions of this package are vulnerable to Missing Authorization due to a missing return statement after a permission check in the ServeHTTP function. An attacker can gain unauthorized access to, create, download, and delete sensitive legal hold data by sending crafted API...

CVE-2026-3524 Authorization Bypass in Mattermost Legal Hold Plugin Due to Missing Return After Permission Check

Mattermost Plugin Legal Hold versions =1.1.4 fail to halt request processing after a failed authorization check in ServeHTTP which allows an authenticated attacker to access, create, download, and delete legal hold data via crafted API requests to the plugin's endpoints. Mattermost Advisory ID:...

CVE-2026-3524

CVE-2026-3524 affects Mattermost Plugin Legal Hold versions

CVE-2026-3524 Authorization Bypass in Mattermost Legal Hold Plugin Due to Missing Return After Permission Check

Mattermost Plugin Legal Hold versions =1.1.4 fail to halt request processing after a failed authorization check in ServeHTTP which allows an authenticated attacker to access, create, download, and delete legal hold data via crafted API requests to the plugin's endpoints. Mattermost Advisory ID:...

PT-2026-30601

Mattermost Plugin Legal Hold versions =1.1.4 fail to halt request processing after a failed authorization check in ServeHTTP which allows an authenticated attacker to access, create, download, and delete legal hold data via crafted API requests to the plugin's endpoints. Mattermost Advisory ID:...

Mattermost 安全漏洞

Mattermost is an open-source collaboration platform developed by the American company Mattermost. There is a security vulnerability in Mattermost; this vulnerability stems from the failure of authorization checks, which allows requests to continue processing without being stopped. This may allow...

GO-2026-4916 Mattermost doesn't rate limit login requests, allowing DoS in github.com/mattermost/mattermost-server

Mattermost doesn't rate limit login requests, allowing DoS in github.com/mattermost/mattermost-server. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive reports from...

PT-2026-29956

Mattermost doesn't rate limit login requests, allowing DoS in github.com/mattermost/mattermost-server. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive reports from...

CVE-2026-33809 vulnerabilities

Vulnerabilities for packages: hugo, seaweedfs-operator, seaweedfs, mattermost, mailpit-fips, mattermost-fips, ollama-fips, seaweedfs-operator-fips, mailpit, hugo-extended, hugo-fips, rclone, seaweedfs-fips, ollama, listmonk, rclone-fips...

GHSA-44P7-9XX4-HF2G vulnerabilities

Vulnerabilities for packages: hugo, seaweedfs-operator, seaweedfs, mattermost, mailpit-fips, mattermost-fips, ollama-fips, seaweedfs-operator-fips, mailpit, hugo-extended, hugo-fips, rclone, seaweedfs-fips, ollama, listmonk, rclone-fips...

CVE-2026-33809 vulnerabilities

Vulnerabilities for packages: seaweedfs, hugo-extended, rclone, mailpit, mattermost, ollama, hugo...

GHSA-44P7-9XX4-HF2G vulnerabilities

Vulnerabilities for packages: seaweedfs, hugo-extended, rclone, mailpit, mattermost, ollama, hugo...

Server-side Request Forgery (SSRF)

Overview @openclaw/mattermost is an OpenClaw Mattermost channel plugin Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the fetch process in multiple channel extensions when outbound requests are made to configured base URLs without proper validation. An...

SUSE CVE-2026-2455

Mattermost versions 11.3.x = 11.3.0, 11.2.x = 11.2.2, 10.11.x = 10.11.10 fail to canonicalize IPv4-mapped IPv6 addresses before reserved IP validation which allows an attacker to perform SSRF attacks against internal services via IPv4-mapped IPv6 literals e.g., ::ffff:127.0.0.1.. Mattermost...

SUSE CVE-2026-2456

Mattermost versions 11.3.x = 11.3.0, 11.2.x = 11.2.2, 10.11.x = 10.11.10 Mattermost fails to limit the size of responses from integration action endpoints, which allows an authenticated attacker to cause server memory exhaustion and denial of service via a malicious integration server that return...

SUSE CVE-2026-2457

Mattermost versions 11.3.x = 11.3.0, 11.2.x = 11.2.2, 10.11.x = 10.11.10 fail to sanitize client-supplied post metadata which allows an authenticated attacker to spoof permalink embeds impersonating other users via crafted PUT requests to the post update API endpoint.. Mattermost Advisory ID:...

SUSE CVE-2026-2458

Mattermost versions 11.3.x = 11.3.0, 11.2.x = 11.2.2, 10.11.x = 10.11.10 fail to properly validate team membership when searching channels which allows a removed team member to enumerate all public channels within a private team via the channel search API endpoint.. Mattermost Advisory ID:...

SUSE CVE-2026-2461

Mattermost Plugins versions =11.3 11.0.3 11.2.2 10.10.11.0 fail to implement authorisation checks on comment block modifications, which allows an authorised attacker with editor permission to modify comments created by other board members. Mattermost Advisory ID: MMSA-2025-00559...

SUSE CVE-2026-2463

Mattermost versions 11.3.x = 11.3.0, 11.2.x = 11.2.2, 10.11.x = 10.11.10 fail to filter invite IDs based on user permissions, which allows regular users to bypass access control restrictions and register unauthorized accounts via leaked invite IDs during team creation.. Mattermost Advisory ID:...

SUSE CVE-2026-2476

Mattermost Plugins versions =2.0.3.0 fail to properly mask sensitive configuration values which allows an attacker with access to support packets to obtain original plugin settings via exported configuration data. Mattermost Advisory ID: MMSA-2026-00606...