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CVE-2026-95703— MISP OrganisationsController File Existence and Image-Type Oracle via Forged Upload tmp_name

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.

在 MISP 中， 方法在通过 验证参数是否为合法的 PHP 上传文件之前，先对调用者提供的 值执行了文件系统探测操作（包括检查文件是否存在、检测 MIME 类型以及读取 EXIF 元数据）。经过身份验证的站点管理员（site-admin）用户可以构造任意的服务器文件路径作为 参数。应用程序随后会对该路径进行探测，并根据文件是否存在及其图像类型返回不同的验证错误消息，从而针对服务器文件系统构建了一个文件存在性和图像类型的“预言机”（oracle）。 该漏洞需要站点管理员权限，不允许实现任意文件读取、代码执行或文件修

CVSS 5.1 · Medium EPSS 0.51% · P44

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery

Affected Version Matrix 1

VendorProduct Version RangeStatus
MISP MISP < 2.5.47 affected
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I. Basic Information for CVE-2026-95703

Vulnerability Information
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Vulnerability Title
MISP OrganisationsController File Existence and Image-Type Oracle via Forged Upload tmp_name
Source: CVE Program / CVE List V5
Vulnerability Description
In MISP, the OrganisationsController::__uploadLogo method processed a caller-supplied tmp_name value with filesystem probes (file_exists, MIME type detection, EXIF reading) before verifying that the value corresponded to a genuine PHP file upload via is_uploaded_file. An authenticated site-admin user could supply an arbitrary server file path as the tmp_name parameter. The application would then probe that path and return distinct validation error messages depending on whether the file existed and what its image type was, effectively creating a file-existence and image-type oracle against the server filesystem. The vulnerability requires site-admin privileges and does not allow arbitrary file read, code execution, or modification; the impact is limited to disclosure of whether a given path exists on the server and, for image files, their type.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
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-2026-95703

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III. Intelligence Information for CVE-2026-95703

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Patches & Fixes for CVE-2026-95703 (1)

Same Patch Batch · MISP · 2026-09-22 · 19 CVEs total

CVE-2026-95806 7.7 HIGH MISP: PHP phar stream wrapper enables deserialization and code execution via caller-influe
CVE-2026-95658 6.9 MEDIUM MISP CSRF vulnerability in workflow moduleStatelessExecution allows cross-site execution o
CVE-2026-95754 6.9 MEDIUM MISP: Disabled-user check ineffective in pre-authentication TOTP login branch
CVE-2026-95679 6.9 MEDIUM MISP Unauthenticated Blind SSRF via XML Body Processing
CVE-2026-95667 6.9 MEDIUM MISP Installer Log and FIFO Created World-Readable, Exposing Sensitive Credentials
CVE-2026-95697 5.3 MEDIUM MISP: Insufficient Authorization Allows Sharing Group Editors to Overwrite Organization Me
CVE-2026-95805 5.3 MEDIUM MISP ACLComponent: Typo in previewEventAttributes ACL key bypasses intended access restric
CVE-2026-95698 5.3 MEDIUM MISP Path Traversal in OrgImgHelper findOrgImage via Crafted Organization Name
CVE-2026-95671 5.3 MEDIUM MISP Collections: Missing Authorization Check for Sharing Group on PUT Request in collecti
CVE-2026-95693 5.3 MEDIUM MISP Information Disclosure via Forged Upload Path
CVE-2026-95674 5.3 MEDIUM MISP EventsController queryEnrichment allows querying unavailable or legacy modules withou
CVE-2026-95683 5.3 MEDIUM MISP Overmind Event View Discloses Report Content Bypassing Report-Level ACL
CVE-2026-95685 5.3 MEDIUM MISP Missing Authorization on replaceSuggestionInReport Event Report Action
CVE-2026-95661 5.1 MEDIUM MISP Reflected Cross-Site Scripting in Attribute Histogram via Unescaped URL-Supplied Type
CVE-2026-95665 5.1 MEDIUM MISP Reflected Cross-Site Scripting in Event Export Confirmation Form via Unescaped JSON
CVE-2026-95701 5.1 MEDIUM MISP Path Traversal via Organization Name in Org-Statistics Logo Check
CVE-2026-95659 4.8 MEDIUM MISP Reflected XSS via Unvalidated Object Type in AnalystData Overmind Thread
CVE-2026-95682 4.8 MEDIUM MISP Stored Cross-Site Scripting via Unescaped Organization Name in Admin Email View

IV. Related Vulnerabilities

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