CVE-2026-22880

Mattermost Mobile Apps versions =2.37 11.4 2.0.37 11.0.4 11.1.3 11.3.2 10.11.11.0 fail to properly validate the SSO authentication callback origin which allows an attacker controlling a malicious Mattermost server to steal user credentials for a legitimate Mattermost server via relaying the SSO...

CVE-2026-22880

Mattermost Mobile Apps versions =2.37 11.4 2.0.37 11.0.4 11.1.3 11.3.2 10.11.11.0 fail to properly validate the SSO authentication callback origin which allows an attacker controlling a malicious Mattermost server to steal user credentials for a legitimate Mattermost server via relaying the SSO...

EUVD-2026-31250

Mattermost Mobile Apps versions =2.37 11.4 2.0.37 11.0.4 11.1.3 11.3.2 10.11.11.0 fail to properly validate the SSO authentication callback origin which allows an attacker controlling a malicious Mattermost server to steal user credentials for a legitimate Mattermost server via relaying the SSO...

CVE-2026-22880 Mobile SSO authentication flow allows credential theft via malicious server

Mattermost Mobile Apps versions =2.37 11.4 2.0.37 11.0.4 11.1.3 11.3.2 10.11.11.0 fail to properly validate the SSO authentication callback origin which allows an attacker controlling a malicious Mattermost server to steal user credentials for a legitimate Mattermost server via relaying the SSO...

CVE-2026-22880

Mattermost Mobile Apps versions =2.37 11.4 2.0.37 11.0.4 11.1.3 11.3.2 10.11.11.0 fail to properly validate the SSO authentication callback origin which allows an attacker controlling a malicious Mattermost server to steal user credentials for a legitimate Mattermost server via relaying the SSO...

CVE-2026-22880 Mobile SSO authentication flow allows credential theft via malicious server

Mattermost Mobile Apps versions =2.37 11.4 2.0.37 11.0.4 11.1.3 11.3.2 10.11.11.0 fail to properly validate the SSO authentication callback origin which allows an attacker controlling a malicious Mattermost server to steal user credentials for a legitimate Mattermost server via relaying the SSO...

CVE-2026-22880 Mobile SSO authentication flow allows credential theft via malicious server

Mattermost Mobile Apps versions =2.37 11.4 2.0.37 11.0.4 11.1.3 11.3.2 10.11.11.0 fail to properly validate the SSO authentication callback origin which allows an attacker controlling a malicious Mattermost server to steal user credentials for a legitimate Mattermost server via relaying the SSO...

Mattermost Mobile Apps 跨站请求伪造漏洞

Mattermost Mobile Apps is a messaging mobile application developed by the American company Mattermost. Versions of Mattermost Mobile Apps prior to 2.0.37, 11.0.4 and earlier, 11.1.3 and earlier, 11.3.2 and earlier, as well as 10.11.11.0 and earlier, contain a cross-site request forgeing...

CVE-2026-22880: Cross-Site Request Forgery (CSRF)

Mattermost Mobile Apps versions =2.37 11.4 2.0.37 11.0.4 11.1.3 11.3.2 10.11.11.0 fail to properly validate the SSO authentication callback origin which allows an attacker controlling a malicious Mattermost server to steal user credentials for a legitimate Mattermost server via relaying the SSO...

PT-2026-42432

Name of the Vulnerable Software and Affected Versions Mattermost Mobile Apps versions prior to 2.38 Description The application fails to properly validate the SSO authentication callback origin. This allows an attacker who controls a malicious Mattermost server to steal user credentials for a...

CVE-2019-20849

An issue was discovered in Mattermost Mobile Apps before 1.26.0. Cookie data can persist on a device after a logout...

CVE-2019-20852

An issue was discovered in Mattermost Mobile Apps before 1.26.0. Local logging is not blocked for sensitive information e.g., server addresses or message content...

CVE-2019-20848

An issue was discovered in Mattermost Mobile Apps before 1.26.0. The Quick Reply feature mishandles crafted replies...

CVE-2019-20851

An issue was discovered in Mattermost Mobile Apps before 1.26.0. An attacker can use directory traversal with the Video Preview feature to overwrite arbitrary files on a device...

CVE-2025-1558

Mattermost Mobile Apps versions =2.25.0 fail to properly validate GIF images prior to rendering which allows a malicious user to cause the Android application to crash via message containing a maliciously crafted GIF...

The vulnerability of mobile messaging applications like Mattermost Mobile Apps, related to the manipulation of cross-site requests, allows attackers to gain unauthorized access to protected information.

The vulnerability of mobile messaging applications like Mattermost Mobile Apps relates to the manipulation of cross-site requests. Exploiting this vulnerability can allow a malicious actor to gain unauthorized access to protected information...

CVE-2025-59480 Inadequate validation of SSO redirect credentials permits credential theft

Mattermost Mobile Apps versions =2.32.0 fail to verify that SSO redirect tokens originate from the trusted server, which allows a malicious Mattermost instance or on-path attacker to obtain user session credentials via crafted token-in-URL responses...

CVE-2025-59480 Inadequate validation of SSO redirect credentials permits credential theft

Mattermost Mobile Apps versions =2.32.0 fail to verify that SSO redirect tokens originate from the trusted server, which allows a malicious Mattermost instance or on-path attacker to obtain user session credentials via crafted token-in-URL responses...

CVE-2025-59480 Inadequate validation of SSO redirect credentials permits credential theft

Mattermost Mobile Apps versions =2.32.0 fail to verify that SSO redirect tokens originate from the trusted server, which allows a malicious Mattermost instance or on-path attacker to obtain user session credentials via crafted token-in-URL responses...

CVE-2025-59480

Mattermost Mobile Apps (Android/iOS) versions up to and including 2.32.0 are affected by an insufficient verification of SSO redirect tokens. The root cause is failure to verify that SSO tokens originate from a trusted server, enabling a malicious Mattermost instance or an on-path attacker to obt...