CVE-2025-62690

Open redirect in error page when link opened in new tab

Published Dec 17, 2025 CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed
Description
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.

Remediation

Vendor Solution

Update Mattermost to versions 11.1.0, 10.11.5 or higher.

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-q66g-q98c-q454 Mattermost has missing redirect URL validation
References
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Mattermost mattermost Server
CPEs cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
Vendors & Products Mattermost mattermost Server
Type Values Removed Values Added
First Time appeared Mattermost
Mattermost mattermost
Vendors & Products Mattermost
Mattermost mattermost
Type Values Removed Values Added
Description 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.
Title Open redirect in error page when link opened in new tab
Weaknesses CWE-601
References
Metrics cvssV3_1

{'score': 3.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Mattermost
Published
Updated
Dec 17, 2025, 2:45 PM
Reserved
Nov 17, 2025, 9:59 AM
Status
Analyzed
Published
Dec 17, 2025, 1:15 PM
Modified
Oct 13, 2026, 11:10 AM