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CVE-2026-90895— MISP Interactive CLI Shell: Authorization Bypass, Credential Exposure, and Terminal Injection

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组织开源的一个威胁情报共享与分析平台。 MISP 2.5.46之前版本存在安全漏洞，该漏洞源于交互式CLI shell的访问控制独立于常规Web应用，导致多项授权不一致，未对非主机组织用户执行lookup_visible限制，未隐藏可能包含HTTP授权凭据的Feed.headers和服务器同步authkey，未一致使用SharingGroup::checkIfAuthorised()检查共享组访问权限，use命令也可在未验证查看权限时建立记录上下文，可能造成敏感信息泄露和未授权访问。

CVSS 8.4 · High EPSS 0.15% · P4

Affected Version Matrix 1

VendorProduct Version RangeStatus
MISP MISP < 2.5.46 affected
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I. Basic Information for CVE-2026-90895

Vulnerability Information
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Vulnerability Title
MISP Interactive CLI Shell: Authorization Bypass, Credential Exposure, and Terminal Injection
Source: CVE Program / CVE List V5
Vulnerability Description
Affected versions of MISP’s interactive CLI shell implement access control independently from the normal web application, causing several authorization inconsistencies. The patch shows that CLI access could differ from the web application in multiple security-sensitive areas:  - feed listings did not enforce the same lookup_visible restrictions for non-host-organisation users;  - feed detail access did not enforce the same host-organisation/site-admin authorization as FeedsController::view();  - Feed.headers, which can contain HTTP authorization credentials, could be exposed instead of being hidden or masked;  - server synchronization authkey values were not explicitly hidden from CLI detail output;  - sharing-group detail access did not consistently use SharingGroup::checkIfAuthorised();  - the use command could establish context for a record without first proving that the user was authorized to view that record The commit additionally hardens pagination and terminal rendering, including neutralization of terminal control sequences found in database-backed values. Those are important hardening changes, but the main vulnerability is the CLI authorization/data-disclosure mismatch. Version affected: ≤2.5.45
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
MISP 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MISP是MISP组织开源的一个威胁情报共享与分析平台。 MISP 2.5.46之前版本存在安全漏洞，该漏洞源于交互式CLI shell的访问控制独立于常规Web应用，导致多项授权不一致，未对非主机组织用户执行lookup_visible限制，未隐藏可能包含HTTP授权凭据的Feed.headers和服务器同步authkey，未一致使用SharingGroup::checkIfAuthorised()检查共享组访问权限，use命令也可在未验证查看权限时建立记录上下文，可能造成敏感信息泄露和未授权访问。
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 ~ 2.5.46 -

II. Public POCs for CVE-2026-90895

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III. Intelligence Information for CVE-2026-90895

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Same Patch Batch · MISP · 2026-09-14 · 5 CVEs total

CVE-2026-90961 9.3 CRITICAL MISP LdapAuth and LinOTPAuth Authentication Bypass via Empty or Non-String Credentials
CVE-2026-90893 5.1 MEDIUM MISP UserSettingsController CSRF Protection Bypass on setTheme, setHomePage, and eventInde
CVE-2026-90957 5.1 MEDIUM MISP: Stored XSS via Inline-Served SVG Organisation Logos and Report Pictures
CVE-2026-90955 4.6 MEDIUM MISP CLI Shell Audit Logs Lose User Identity and CLI Marker After First Lazy Model Load

IV. Related Vulnerabilities

Same product: MISP
Same vendor: MISP
Same weakness: CWE-862