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CVE-2026-3187— feiyuchuixue sz-boot-parent API Endpoint upload unrestricted upload

Quick assessment

Affected
feiyuchuixue sz-boot-parent
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.

Sz-Admin是INS6+个人开发者的一个中后台管理软件。 Sz-Admin 1.3.2-beta及之前版本存在代码问题漏洞，该漏洞源于对文件/api/admin/sys-file/upload的错误操作，可能导致无限制上传。

CVSS 6.3 · Medium EPSS 0.53% · P43

Possible ATT&CK Techniques 1 AI

T1505.003 · Web Shell
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I. Basic Information for CVE-2026-3187

Vulnerability Information
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Vulnerability Title
feiyuchuixue sz-boot-parent API Endpoint upload unrestricted upload
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was identified in feiyuchuixue sz-boot-parent up to 1.3.2-beta. Affected by this issue is some unknown functionality of the file /api/admin/sys-file/upload of the component API Endpoint. Such manipulation leads to unrestricted upload. The attack may be launched remotely. The exploit is publicly available and might be used. Upgrading to version 1.3.3-beta can resolve this issue. The name of the patch is aefaabfd7527188bfba3c8c9eee17c316d094802. Upgrading the affected component is recommended. The project was informed beforehand and acted very professional: "We have introduced a whitelist restriction on the /api/admin/sys-file/upload endpoint via the oss.allowedExts and oss.allowedMimeTypes configuration options, allowing the specification of permitted file extensions and MIME types for uploads."
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
危险类型文件的不加限制上传
Source: CVE Program / CVE List V5
Vulnerability Title
Sz-Admin 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sz-Admin是INS6+个人开发者的一个中后台管理软件。 Sz-Admin 1.3.2-beta及之前版本存在代码问题漏洞，该漏洞源于对文件/api/admin/sys-file/upload的错误操作，可能导致无限制上传。
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
feiyuchuixue sz-boot-parent 1.3.2-beta -

II. Public POCs for CVE-2026-3187

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III. Intelligence Information for CVE-2026-3187

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Patches & Fixes for CVE-2026-3187 (1)

Proof of Concept for CVE-2026-3187 (1)

Same Patch Batch · feiyuchuixue · 2026-02-25 · 5 CVEs total

CVE-2026-3186 6.3 MEDIUM feiyuchuixue sz-boot-parent Password Reset password default password
CVE-2026-3185 5.3 MEDIUM feiyuchuixue sz-boot-parent API Endpoint sys-message authorization
CVE-2026-3188 4.3 MEDIUM feiyuchuixue sz-boot-parent API templates path traversal
CVE-2026-3189 3.1 LOW feiyuchuixue sz-boot-parent download server-side request forgery

IV. Related Vulnerabilities

Same product: sz-boot-parent
Same vendor: feiyuchuixue
Same weakness: CWE-434

V. Comments for CVE-2026-3187

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