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CVE-2026-94374— MISP: IDOR via Client-Supplied Report ID in Module Results Processing Allows Reparenting and Overwriting of Other Events' Reports

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 contains an insecure direct object reference vulnerability in the processModuleResultsData method of the Event model. When processing module results, the code iterates over EventReport entries supplied in the resolved data and saves each one. Unlike the a

CVSS 8.3 · High EPSS 0.24% · P15

Affected Version Matrix 1

VendorProduct Version RangeStatus
MISP MISP < 2.5.47 affected
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I. Basic Information for CVE-2026-94374

Vulnerability Information

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Vulnerability Title
MISP: IDOR via Client-Supplied Report ID in Module Results Processing Allows Reparenting and Overwriting of Other Events' Reports
Source: CVE Program / CVE List V5
Vulnerability Description
MISP contains an insecure direct object reference vulnerability in the processModuleResultsData method of the Event model. When processing module results, the code iterates over EventReport entries supplied in the resolved data and saves each one. Unlike the adjacent attribute and object processing loops, the report loop did not unset the client-supplied 'id' field before calling save(). Because the MISP EventReport model's create() method does not strip the id field, an authenticated user with permission to submit module results could include an 'id' value referencing an existing report belonging to a different event. Upon save(), the ORM would update that existing row rather than insert a new one, allowing the attacker to   - read the content of another event's report by reparenting it into their own event  - overwrite the report's fields with attacker-controlled data  - change the report's event_id to redirect ownership.  This constitutes an authorization bypass through a user-controlled key, enabling cross-event data disclosure and integrity compromise. The vulnerability requires an authenticated session with the ability to invoke module result processing on an event. 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:N/VC:L/VI:H/VA:N/SC:N/SI:H/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
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-2026-94374

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III. Intelligence Information for CVE-2026-94374

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Patches & Fixes for CVE-2026-94374 (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-2026-94404 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-2026-94394 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-639

V. Comments for CVE-2026-94374

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