CVE-2025-62690
December 17, 2025
Mattermost versions 10.11.x <= 10.11.4 fail to validate redirect URLs on the /error page, which allows an attacker to redirect a victim to a malicious site via a crafted link opened in a new tab.
Affected Packages
github.com/mattermost/mattermost (GO):
Affected version(s) >=v10.11.0 <v10.11.5Fix Suggestion:
Update to version v10.11.5github.com/mattermost/mattermost (GO):
Affected version(s) >=v11.0.0-alpha.1 <v11.1.0Fix Suggestion:
Update to version v11.1.0github.com/mattermost/mattermost/server/v8 (GO):
Affected version(s) >=v8.0.0-20250721062209-4952acea88ce <v8.0.0-20251016131338-dad6bd7a1509Fix Suggestion:
Update to version v8.0.0-20251016131338-dad6bd7a1509Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
2.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
3.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
URL Redirection to Untrusted Site ('Open Redirect')
EPSS
Base Score:
0.04
