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CVE-2025-13523

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CVE-2025-13523

Published: Feb 6, 2026

Modified: Feb 6, 2026

PUBLISHED

CVSS v3.1

7.7

HIGH

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

VendorProductVersions

Mattermost

Mattermost Confluence Plugin

affected
0 - < 1.7.0
unaffected
1.7.0

Weaknesses (CWE)

CWE-79

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

References

MMSA-2025-00557
vendor-advisory

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