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CVE-2026-30231— Flare: Private File IDOR via raw/direct endpoints

Quick assessment

Affected
FlintSH Flare
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.

Flare是Zachary Lowery个人开发者的一个文件共享平台。 Flare 1.7.2之前版本存在安全漏洞，该漏洞源于原始和直接文件路由仅阻止未经身份验证的用户访问私有文件，可能导致任何已验证的非所有者用户通过已知文件URL检索内容。

AI Predicted 5.3 Difficulty: Easy EPSS 0.28% · P21

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2026-30231

Vulnerability Information
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Vulnerability Title
Flare: Private File IDOR via raw/direct endpoints
Source: CVE Program / CVE List V5
Vulnerability Description
Flare is a Next.js-based, self-hostable file sharing platform that integrates with screenshot tools. Prior to version 1.7.2, the raw and direct file routes only block unauthenticated users from accessing private files. Any authenticated, non‑owner user who knows the file URL can retrieve the content, which is inconsistent with stricter checks used by other endpoints. This issue has been patched in version 1.7.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/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
Vulnerability Title
Flare 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Flare是Zachary Lowery个人开发者的一个文件共享平台。 Flare 1.7.2之前版本存在安全漏洞，该漏洞源于原始和直接文件路由仅阻止未经身份验证的用户访问私有文件，可能导致任何已验证的非所有者用户通过已知文件URL检索内容。
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
FlintSH Flare < 1.7.2 -

II. Public POCs for CVE-2026-30231

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III. Intelligence Information for CVE-2026-30231

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Vendor Advisories for CVE-2026-30231 (1)

IV. Related Vulnerabilities

Same product: Flare
Same vendor: FlintSH
Same weakness: CWE-639

V. Comments for CVE-2026-30231

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