CVE-2025-9072

MediumCVSS 5.4/10Last modified Oct 19, 2026

Description

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.

Metrics

CVSS 3.1 5.4/10CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-601

Affected software

Vendor	Product	Versions
Mattermost	Mattermost	>= 10.10.0, <= 10.10.1; >= 10.5.0, <= 10.5.9; >= 10.9.0, <= 10.9.4

References

https://mattermost.com/security-updatesVendor Advisory

Timeline

Published: Sep 15, 2025
Last modified: Oct 19, 2026
NVD status: Analyzed

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