high7.7
CVE-2025-13523
Mattermost Confluence plugin doesn't properly escape user-controlled display names in HTML template rendering
Impact
Mattermost Confluence plugin version < 1.7.0 fails to properly escape user-controlled display names in HTML template rendering which allows authenticated Confluence users with malicious display names to execute arbitrary JavaScript in victim browsers via sending a specially crafted OAuth2 connection link that, when visited, renders the attacker's display name without proper sanitization. Mattermost Advisory ID: MMSA-2025-00557
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/mattermost/mattermost-plugin-confluence | < 1.7.0 | 1.7.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mattermost | Confluence | from 1.0.0 before 1.7.0 |