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CVE-2026-54396— MISP AuthKey edit endpoint allows authenticated user email enumeration

AI Predicted 4.3 Difficulty: Moderate EPSS 0.25% · P16

Affected Version Matrix 1

VendorProductVersion RangeStatus
mispmisp< 2.5.40affected
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I. Basic Information for CVE-2026-54396

Vulnerability Information
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Vulnerability Title
MISP AuthKey edit endpoint allows authenticated user email enumeration
Source: NVD (National Vulnerability Database)
Vulnerability Description
An information disclosure vulnerability exists in the MISP AuthKey edit functionality. When a validation error occurs during an AuthKey edit request, the user dropdown was populated using the attacker-controlled AuthKey.user_id value from the submitted request data. An authenticated user with permission to edit an AuthKey could submit arbitrary user IDs and observe the returned dropdown data, allowing enumeration of user email addresses. The issue is fixed by deriving the dropdown user from the persisted AuthKey owner instead of the request body.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
信息暴露
Source: NVD (National Vulnerability Database)
Vulnerability Title
MISP 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MISP是MISP组织开源的一套开源的软件解决方案。 该产品用于收集、存储、分发、共享网络安全指标,并具有威胁网络安全事件分析和恶意软件分析等功能。 MISP存在信息泄露漏洞，该漏洞源于AuthKey编辑功能中用户下拉列表填充使用攻击者控制的user_id值，可能导致已认证的攻击者通过提交任意用户ID枚举用户电子邮件地址。
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

VendorProductAffected VersionsCPESubscribe
mispmisp 0 ~ 2.5.40 -

II. Public POCs for CVE-2026-54396

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III. Intelligence Information for CVE-2026-54396

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Patches & Fixes for CVE-2026-54396 (1)

Same Patch Batch · misp · 2026-06-12 · 12 CVEs total

CVE-2026-54358MISP organization administrators can target site administrator accounts for password reset
CVE-2026-54362MISP template builder exposes non-visible custom galaxies across organisations
CVE-2026-54359MISP automation endpoints may be exposed to CSRF when Sec-Fetch-Site protection is disable
CVE-2026-54398MISP object edit authorization bypass allows unauthorized sharing group assignment
CVE-2026-54394MISP organisation logo path traversal allows retrieval of arbitrary PNG/SVG files
CVE-2026-54357MISP improper authorization allows organization administrators to modify site administrato
CVE-2026-54393MISP Overmind theme stored XSS via unvalidated homepage setting
CVE-2026-54395MISP UiBeta event index reflected XSS in advanced filter popup
CVE-2026-54397MISP event editing allows unauthorized assignment to undisclosed sharing groups
CVE-2026-54360MISP sharing group creation mass assignment allows unauthorized takeover of existing shari
CVE-2026-54361MISP mass assignment vulnerabilities allow unauthorized modification of ownership and dele

IV. Related Vulnerabilities

Same product: misp
Same vendor: misp
Same weakness: CWE-200

V. Comments for CVE-2026-54396

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