CVE-2025-13523: Mattermost Confluence plugin version <1.7.0 fails to properly escape user-controlled display names in HTML template rendering which allows authenticated…

PriorityP429medium5.4CVSS 3.1

AVNACLPRLUIRSCCLILAN

EPSS

0.19%

8.6th percentile

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

3 ranges

Vendor	Product	Version range	Fixed in
github.com	mattermost_mattermost-plugin-confluence	>= 0 < 1.7.0	1.7.0
mattermost	confluence	>= 1.0.0 < 1.7.0	1.7.0
mattermost	mattermost_confluence_plugin	< 1.7.0	1.7.0

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