CVE-2021-41277Known exploitationPublic exploitNetwork attack vector

Unauthenticated file disclosure via unchecked GeoJSON URL

Published Nov 17, 2021 · Updated Oct 21, 2025

Local file inclusion in Metabase 0.40.0 through 0.40.4 and 1.40.0 through 1.40.4 allows remote attackers to read server files. The unauthenticated GET /api/geojson handler decoded its url parameter and passed file locations to io/reader without rejecting the scheme or requiring superuser access. Any network client that can reach the endpoint can return files readable by the Metabase process, including configuration secrets and environment data.

CVSS severity9.9
Critical
EPSS probability97.18%
Next 30 days · Nov 1, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Local file inclusion in Metabase 0.40.0 through 0.40.4 and 1.40.0 through 1.40.4 allows remote attackers to read server files. The unauthenticated GET /api/geojson handler decoded its url parameter and passed file locations to io/reader without rejecting the scheme or requiring superuser access. Any network client that can reach the endpoint can return files readable by the Metabase process, including configuration secrets and environment data.

The record

CVE
CVE-2021-41277
Published
Nov 17, 2021
Updated
Oct 21, 2025
Vendor
Metabase
Product
Metabase
Classifications
CWE-200, CWE-22, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 17, 2021CVE publishedPublication date reported by the CVE source.
  2. Nov 12, 2024Exploitation reportedCISA Known Exploited Vulnerabilities catalog listing
  3. Oct 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <0.40.5
  2. Affected versionversion=< 0.40.5
  3. Affected versionversion=>= 1.0.0, < 1.40.5
  4. Affected versionversion=1.0.0 <1.40.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Metabase · Metabaseversion=0 <0.40.5; version=< 0.40.5; version=>= 1.0.0, < 1.40.5; version=1.0.0 <1.40.5

Published CVSS scores

7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
9.9GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:L
5.0NVDAV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsShadowserver observations through Sep 28, 2026. Gaps indicate unavailable data.
Sep 22, 2026Sep 28, 2026
View daily counts
Reporting dayUnique IPs
Sep 22, 20261
Sep 23, 20263
Sep 24, 20263
Sep 25, 20264
Sep 26, 20263
Sep 27, 20262
Sep 28, 20261
Latest reporting daySep 28, 2026
Latest daily unique IPs1
Prior 30-day average2
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1005Data from Local System

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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