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CVE-2026-94372— Stored Cross-Site Scripting via Unescaped Galaxy Cluster Tag Names in MISP Default Theme Galaxies Index

Quick assessment

Affected
MISP MISP
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.

MISP 存在一个存储型跨站脚本（XSS）漏洞，位于默认主题下的“银河系（Galaxies）”索引页面。当 MISP 实例在同步过程中检测到未知的自定义或默认银河系集群（galaxy clusters）时，会在面向站点管理员的信息提示中渲染示例标签名称。在默认主题中，这些示例标签名称在插入 HTML 输出时未经过 HTML 实体编码处理。拥有标签编辑权限的用户可以构造包含任意脚本的恶意 标签。随后，当站点管理员访问“银河系”索引页面时，其浏览器会将该构造的标签内容解析为可执行的标记，从而允许攻击者读取会话数据、以管

CVSS 6.3 · Medium EPSS 0.39% · P33

Affected Version Matrix 1

VendorProduct Version RangeStatus
MISP MISP < 2.5.47 affected
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I. Basic Information for CVE-2026-94372

Vulnerability Information
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Vulnerability Title
Stored Cross-Site Scripting via Unescaped Galaxy Cluster Tag Names in MISP Default Theme Galaxies Index
Source: CVE Program / CVE List V5
Vulnerability Description
MISP contains a stored cross-site scripting (XSS) vulnerability in the default theme's Galaxies index page. When a MISP instance detects unknown custom or default galaxy clusters during synchronization, it renders sample tag names in an informational notice directed at site administrators. In the default theme, these sample tag names were inserted into the HTML output without HTML-entity encoding. A user with tag-editor privileges could craft a malicious misp-galaxy tag containing arbitrary script. When a site administrator subsequently viewed the Galaxies index page, the crafted tag content was interpreted as executable markup in the administrator's browser session, enabling the attacker to read session data, perform actions on behalf of the administrator, or otherwise compromise the administrator's browser context. The Overmind theme already applied HTML escaping to the same values and was not affected. The vulnerability requires the attacker to possess tag-editor-level access to create the crafted tag and requires the victim (a site administrator) to view the Galaxies index page in the default theme. The impact is limited to the administrator's browser session and does not directly compromise the MISP server process. Version affected: <2.5.47
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA: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

Affected Products

Vendor Product Affected Versions CPE Subscribe
MISP MISP 0 ~ 2.5.47 -

II. Public POCs for CVE-2026-94372

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III. Intelligence Information for CVE-2026-94372

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Patches & Fixes for CVE-2026-94372 (1)

Same Patch Batch · MISP · 2026-09-21 · 11 CVEs total

CVE-2026-94381 8.7 HIGH MISP Privilege Escalation: Read-Only API Key User Can Regain Full Role via updateLoginTime
CVE-2026-94383 8.6 HIGH MISP Blocklist Workflow Module: Arbitrary Script Execution via Unrestricted File Extension
CVE-2026-94401 8.3 HIGH MISP Arbitrary Local File Read and SSRF via MISP Export Upload
CVE-2026-94374 8.3 HIGH MISP: IDOR via Client-Supplied Report ID in Module Results Processing Allows Reparenting a
CVE-2026-94404 7.1 HIGH MISP CSRF vulnerability allows unauthorized attribute modification
CVE-2026-94379 6.9 MEDIUM MISP: HTTP Method Bypass of Login Security Controls (Bruteforce Protection and Email OTP)
CVE-2026-94393 6.4 MEDIUM MISP Event Report Cross-Event Reparenting via Unscoped UUID Resolution in editReport
CVE-2026-94277 6.3 MEDIUM Stored Cross-Site Scripting in MISP Galaxy Matrix Statistics via Unescaped Galaxy Name
CVE-2026-94394 6.3 MEDIUM MISP ObjectReferencesController: Granular Distribution and Sharing Group Restrictions Bypa
CVE-2026-94373 6.3 MEDIUM MISP DOM-based Cross-Site Scripting via innerHTML in Contextual Menu

IV. Related Vulnerabilities

Same product: MISP
Same vendor: MISP
Same weakness: CWE-79