CVE-2025-9072

Mattermost versions 10.10.x <= 10.10.1, 10.5.x <= 10.5.9, 10.9.x <= 10.9.4 fail to validate the redirect_to parameter, allowing an attacker to craft a malicious link that, once a user authenticates with their SAML provider, could post the user’s cookies to an attacker-controlled URL.

CVSS v3 7.6 HIGH

7.6^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.1 / Impact : 5.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://mattermost.com/security-updates	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mattermost:mattermost_server::::::::
	cpe:2.3:a:mattermost:mattermost_server::::::::
	cpe:2.3:a:mattermost:mattermost_server::::::::

History

19 Oct 2026, 17:10

Type	Values Removed	Values Added
Summary		(es) Las versiones de Mattermost 10.10.x menor o igual que 10.10.1, 10.5.x menor o igual que 10.5.9, 10.9.x menor o igual que 10.9.4 no validan el parámetro redirect_to, permitiendo a un atacante crear un enlace malicioso que, una vez que un usuario se autentica con su proveedor SAML, podría publicar las cookies del usuario a una URL controlada por el atacante.

Information

Published : 2025-09-15 11:15

Updated : 2026-10-19 17:10

NVD link : CVE-2025-9072

Mitre link : CVE-2025-9072

CVE.ORG link : CVE-2025-9072

JSON object : View

Products Affected

mattermost

mattermost_server

CWE

CWE-601

URL Redirection to Untrusted Site ('Open Redirect')

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