CVE-2025-13523— Cross-Site Scripting (XSS) via Unescaped Display Names in Mattermost Confluence Plugin OAuth2 Flow
Quick assessment
Affected
Mattermost Mattermost Confluence Plugin
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Mattermost Confluence Plugin是美国Mattermost公司的一个插件。 Mattermost Confluence Plugin 1.7.0之前版本存在安全漏洞，该漏洞源于HTML模板渲染中未正确转义用户控制的显示名称，可能导致经过身份验证的攻击者执行任意JavaScript。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1189 · Drive-by Compromise
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I. Basic Information for CVE-2025-13523
Vulnerability Information
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Vulnerability Title
Cross-Site Scripting (XSS) via Unescaped Display Names in Mattermost Confluence Plugin OAuth2 Flow
Source: CVE Program / CVE List V5
Vulnerability 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
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Mattermost Confluence Plugin 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mattermost Confluence Plugin是美国Mattermost公司的一个插件。 Mattermost Confluence Plugin 1.7.0之前版本存在安全漏洞，该漏洞源于HTML模板渲染中未正确转义用户控制的显示名称，可能导致经过身份验证的攻击者执行任意JavaScript。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Mattermost | Mattermost Confluence Plugin | 0 ~ 1.7.0 | - |
|
II. Public POCs for CVE-2025-13523
| # | POC Description | Source Link | Shenlong Link |
|---|
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V. Comments for CVE-2025-13523
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