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CVE-2026-94394— MISP ObjectReferencesController: Granular Distribution and Sharing Group Restrictions Bypassed When Adding Object References

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.

When a regular user adds a reference between objects or attributes, MISP checks whether the user can access the overall event, but it does not always check whether the individual pieces of data are also allowed for that user. Because of this, someone who can v

CVSS 6.3 · Medium EPSS 0.21% · P11

Affected Version Matrix 1

VendorProduct Version RangeStatus
MISP MISP < 2.5.47 affected
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I. Basic Information for CVE-2026-94394

Vulnerability Information

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Vulnerability Title
MISP ObjectReferencesController: Granular Distribution and Sharing Group Restrictions Bypassed When Adding Object References
Source: CVE Program / CVE List V5
Vulnerability Description
When a regular user adds a reference between objects or attributes, MISP checks whether the user can access the overall event, but it does not always check whether the individual pieces of data are also allowed for that user. Because of this, someone who can view an event could potentially access attributes or objects inside that event that were meant to be restricted to a specific sharing group or distribution level. The vulnerability affects authenticated users who are not site administrators and who already have access to an event containing more restricted data. The main impact is that users may be able to view sensitive attribute values, object details, or related object data that they should not normally be allowed to see.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
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-2026-94394

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III. Intelligence Information for CVE-2026-94394

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Patches & Fixes for CVE-2026-94394 (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-2026-94372 6.3 MEDIUM Stored Cross-Site Scripting via Unescaped Galaxy Cluster Tag Names in MISP Default Theme G
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-862

V. Comments for CVE-2026-94394

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