CVE intelligence and bounded remediation

CVE-2021-41277 — Metabase GeoJSON API Local File Inclusion Vulnerability

Critical CVSS 10 CISA KEV

Metabase is an open source data analytics platform. In affected versions a security issue has been discovered with the custom GeoJSON map (`admin->settings->maps->custom maps->add a map`) support and potential local file inclusion (including environment variables). URLs were not validated prior to being loaded. This issue is fixed in a new maintenance release (0.40.5 and 1.40.5), and any subsequent release after that. If you’re unable to upgrade immediately, you can mitigate this by including rules in your reverse proxy or load balancer or WAF to provide a validation filter before the application.

Severity
Critical
CVSS
10 (3.1)
Published
2021-11-17
CISA KEV
Known exploited
Ecosystem
software/application
Weaknesses
CWE-200, CWE-22

Affected products

  • metabase / metabase / 0.40.0
  • metabase / metabase / 0.40.1
  • metabase / metabase / 0.40.2
  • metabase / metabase / 0.40.3
  • metabase / metabase / 0.40.4
  • metabase / metabase / 1.40.0

Showing 6 representative product identities from 10 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Path traversal, unsafe upload, and file handling

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Check exposure

  • Trace untrusted filenames, archive entries, URLs, and path segments into read, write, include, extraction, and upload operations.
  • Identify filesystem roots, mount permissions, symbolic-link behavior, archive handling, and whether uploaded content is web-accessible or executable.
  • Review canonicalization and containment checks across supported operating systems and storage backends.

Remediate safely

  • Generate server-side storage identifiers and resolve paths beneath a fixed root using filesystem-aware containment checks.
  • Reject absolute, parent-relative, alternate-separator, device, link, and archive entries that escape the intended root.
  • Store uploads outside executable or served paths, validate type and size, and use private atomic temporary files.

Authoritative sources

Complete CVE record and remediation plan

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