CVE-2026-94381— MISP Privilege Escalation: Read-Only API Key User Can Regain Full Role via updateLoginTime
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 has a security issue that can let a user gain more access than their API key is supposed to allow. A read-only API key should only let someone view information. However, after logging in with such a key, a specific MISP function could accidentally restore
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I. Basic Information for CVE-2026-94381
Vulnerability Information
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Vulnerability Title
MISP Privilege Escalation: Read-Only API Key User Can Regain Full Role via updateLoginTime
Source: CVE Program / CVE List V5
Vulnerability Description
MISP has a security issue that can let a user gain more access than their API key is supposed to allow.
A read-only API key should only let someone view information. However, after logging in with such a key, a specific MISP function could accidentally restore the user’s normal account permissions. This means someone with a read-only API key could potentially gain write, delete, or even administrator access if their underlying account has those permissions.
Exploiting the issue requires a valid read-only API key and a single request to the affected function.
The main impact is that MISP’s API key restrictions can be bypassed, allowing actions that the API key was specifically meant to prevent.
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:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-94381
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-94381 (1)
Same Patch Batch · MISP · 2026-09-21 · 11 CVEs total
| 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-2026-94394 | 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 |
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Same vendor: MISP
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CVE-2026-95754
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CVE-2026-95703
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Same weakness: CWE-269
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V. Comments for CVE-2026-94381
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