GitHub Advisoryadvisory · Go

GHSA-ffx7-34p2-vm3w Mattermost Confluence plugin doesn't properly escape user-controlled display names in HTML template rendering

HIGH Published 2026-02-06 Modified 2026-02-06 Official page ↗
Aliases
CVE-2025-13523
Ecosystem
Go
Packages
github.com/mattermost/mattermost-plugin-confluence
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
Weaknesses
CWE-79
Reviewed
2026-02-06

Affected packages

• Go github.com/mattermost/mattermost-plugin-confluence: < 1.7.0 → fixed in 1.7.0

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

Related

Alias · CVE (1)

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

Weakness · CWE (1)

  • CWE-79 Improper Neutralization of Input During Web Page Generation weakness

References