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CVE-2026-95661— MISP Reflected Cross-Site Scripting in Attribute Histogram via Unescaped URL-Supplied Type List

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 的“属性直方图视图”中存在一个反射型跨站脚本（XSS）漏洞。变量 源自 URL 路径段，并在未进行任何编码或转义的情况下，被直接插值到 HTML 属性内的 JavaScript 数组字面量中。攻击者可以诱导已认证的 MISP 用户访问一个包含恶意类型值的构造 URL，从而在受害者浏览器中、以 MISP 应用的原生上下文执行任意 JavaScript 代码。 成功利用该漏洞可使攻击者读取会话 Cookie、以受害者身份执行操作，或从 MISP 界面可访问的位置窃取敏感数据。 该漏洞的利用需要受害者已处于认证

CVSS 5.1 · Medium EPSS 0.44% · P38

Possible ATT&CK Techniques 1 AI

T1059.007 · JavaScript

Affected Version Matrix 1

VendorProduct Version RangeStatus
MISP MISP < 2.5.47 affected
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I. Basic Information for CVE-2026-95661

Vulnerability Information
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Vulnerability Title
MISP Reflected Cross-Site Scripting in Attribute Histogram via Unescaped URL-Supplied Type List
Source: CVE Program / CVE List V5
Vulnerability Description
MISP contains a reflected cross-site scripting (XSS) vulnerability in the attribute histogram view. The $selectedTypes variable, which is derived from the URL path segment , was interpolated directly into a JavaScript array literal inside an onClick HTML attribute without any encoding or escaping. An attacker who can cause an authenticated MISP user to visit a crafted URL containing a malicious type value can execute arbitrary JavaScript in the victim's browser within the MISP application origin. Successful exploitation allows the attacker to read session cookies, perform actions on behalf of the victim, or exfiltrate sensitive data accessible from the MISP interface.  The vulnerability requires the victim to be authenticated and to actively navigate to the attacker-supplied URL.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/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-2026-95661

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III. Intelligence Information for CVE-2026-95661

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Patches & Fixes for CVE-2026-95661 (1)

Same Patch Batch · MISP · 2026-09-22 · 19 CVEs total

CVE-2026-95806 7.7 HIGH MISP: PHP phar stream wrapper enables deserialization and code execution via caller-influe
CVE-2026-95658 6.9 MEDIUM MISP CSRF vulnerability in workflow moduleStatelessExecution allows cross-site execution o
CVE-2026-95754 6.9 MEDIUM MISP: Disabled-user check ineffective in pre-authentication TOTP login branch
CVE-2026-95679 6.9 MEDIUM MISP Unauthenticated Blind SSRF via XML Body Processing
CVE-2026-95667 6.9 MEDIUM MISP Installer Log and FIFO Created World-Readable, Exposing Sensitive Credentials
CVE-2026-95693 5.3 MEDIUM MISP Information Disclosure via Forged Upload Path
CVE-2026-95805 5.3 MEDIUM MISP ACLComponent: Typo in previewEventAttributes ACL key bypasses intended access restric
CVE-2026-95698 5.3 MEDIUM MISP Path Traversal in OrgImgHelper findOrgImage via Crafted Organization Name
CVE-2026-95671 5.3 MEDIUM MISP Collections: Missing Authorization Check for Sharing Group on PUT Request in collecti
CVE-2026-95685 5.3 MEDIUM MISP Missing Authorization on replaceSuggestionInReport Event Report Action
CVE-2026-95674 5.3 MEDIUM MISP EventsController queryEnrichment allows querying unavailable or legacy modules withou
CVE-2026-95683 5.3 MEDIUM MISP Overmind Event View Discloses Report Content Bypassing Report-Level ACL
CVE-2026-95697 5.3 MEDIUM MISP: Insufficient Authorization Allows Sharing Group Editors to Overwrite Organization Me
CVE-2026-95665 5.1 MEDIUM MISP Reflected Cross-Site Scripting in Event Export Confirmation Form via Unescaped JSON
CVE-2026-95703 5.1 MEDIUM MISP OrganisationsController File Existence and Image-Type Oracle via Forged Upload tmp_na
CVE-2026-95701 5.1 MEDIUM MISP Path Traversal via Organization Name in Org-Statistics Logo Check
CVE-2026-95659 4.8 MEDIUM MISP Reflected XSS via Unvalidated Object Type in AnalystData Overmind Thread
CVE-2026-95682 4.8 MEDIUM MISP Stored Cross-Site Scripting via Unescaped Organization Name in Admin Email View

IV. Related Vulnerabilities

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