mattermost/mattermost-plugin-confluence · Security
Mattermost Confluence plugin doesn't properly escape user-controlled display names in HTML template rendering
- GHSA ID
- GHSA-ffx7-34p2-vm3w
- CVE ID
- CVE-2025-13523
- Severity
- high
- Published
- Updated
- CVSS
- 7.7 · CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
- CVSS v3
- 7.7 · CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
Description
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
CWEs
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')