VULNERABILITY INTELLIGENCE

CVE-2025-13523

CVSS score7.7 HIGH
EPSS probability0.22%
CISA KEVNot currently listed
Published2026-02-06
Last modified2026-06-17
CVSS vectorCVSS: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

Weakness classification

  • responsibledisclosure@mattermost.com: CWE-79

Primary references