CVE-2025-9072 Details
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.
A vulnerability exists in Mattermost versions 10.10.x prior to 10.10.1, 10.5.x prior to 10.5.9, and 10.9.x prior to 10.9.4. These versions fail to properly validate the redirect_to parameter, allowing attackers to create malicious links. When a user authenticates via SAML, these links can capture and send the user's cookies to an attacker-controlled URL.
Users can upgrade to Mattermost versions 10.11.010.10.2, 10.11.010.5.10, or 10.11.010.9.5 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Sep 15, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://mattermost.com/security-updates | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-601 | URL Redirection to Untrusted Site ('Open Redirect') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| mattermost mattermost server | >= 10.5.0, < 10.5.10 >= 10.9.0, < 10.9.5 >= 10.10.0, < 10.10.2 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Sep 16, 2025 | Initial Analysis | [email protected] |
| Sep 15, 2025 | New CVE Received | [email protected] |