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  5. GHSA-xjv7-6w92-42r7

GHSA-xjv7-6w92-42r7: marimo vulnerable to proxy abuse of /mpl/{port}/

October 1, 2025 (updated November 20, 2025)

The /mpl/<port>/<route> endpoint, which is accessible without authentication on default Marimo installations allows for external attackers to reach internal services and arbitrary ports.

References

  • github.com/advisories/GHSA-xjv7-6w92-42r7
  • github.com/marimo-team/marimo
  • github.com/marimo-team/marimo/commit/0312706d5e594acdb405209b2c8d87c98f46b22b
  • github.com/marimo-team/marimo/releases/tag/0.16.4
  • github.com/marimo-team/marimo/security/advisories/GHSA-xjv7-6w92-42r7
  • marimo-team.notion.site/cve-proxy-without-authentication

Code Behaviors & Features

Detect and mitigate GHSA-xjv7-6w92-42r7 with GitLab Dependency Scanning

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Affected versions

All versions starting from 0.9.20 before 0.16.4

Fixed versions

  • 0.16.4

Solution

Upgrade to version 0.16.4 or above.

Impact 5.3 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Learn more about CVSS

Weakness

  • CWE-441: Unintended Proxy or Intermediary ('Confused Deputy')

Source file

pypi/marimo/GHSA-xjv7-6w92-42r7.yml

Spotted a mistake? Edit the file on GitLab.

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