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CVE-2026-10854— Unauthorized exposure of private galaxies in MISP event template creation

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是MISP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存在安全漏洞，该漏洞源于事件模板创建工作流中的可见性控制问题，可能导致非站点管理员用户访问其他组织的私有星系。

AI Predicted 5.3 Difficulty: Easy EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
misp misp ≤ 2.5.38 affected
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I. Basic Information for CVE-2026-10854

Vulnerability Information
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Vulnerability Title
Unauthorized exposure of private galaxies in MISP event template creation
Source: CVE Program / CVE List V5
Vulnerability Description
A visibility control issue in the event template creation workflow allowed non-site-admin users to access private galaxies belonging to other organisations. The event template builder loaded all enabled galaxies without applying organisation or distribution-based access restrictions, potentially exposing private galaxy metadata such as galaxy type and description to users who should not have visibility. The issue has been fixed by restricting galaxy queries for non-site-admin users to galaxies owned by the user’s organisation or galaxies with a non-private distribution setting. Site administrators retain visibility of all enabled galaxies.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/U:Green
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
MISP 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MISP是MISP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存在安全漏洞，该漏洞源于事件模板创建工作流中的可见性控制问题，可能导致非站点管理员用户访问其他组织的私有星系。
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
misp misp 0 ~ 2.5.38 -

II. Public POCs for CVE-2026-10854

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III. Intelligence Information for CVE-2026-10854

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Patches & Fixes for CVE-2026-10854 (1)

Same Patch Batch · misp · 2026-06-04 · 8 CVEs total

CVE-2026-10860 MISP CRUDComponent delete validation bypass via operator precedence error
CVE-2026-10856 Open redirect in MISP dashboard button widget URL handling
CVE-2026-10863 MISP User-controlled order parameter in correlations over-correlation endpoint
CVE-2026-10864 MISP Dashboard widget field selection may expose restricted user and organisation data
CVE-2026-10868 MISP user edit endpoint mass assignment vulnerability allows unauthorized user account mod
CVE-2026-10861 MISP post-login open redirect via pre_login_requested_url
CVE-2026-10855 MISP Event template importer authorization bypass

IV. Related Vulnerabilities

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