KEV Intelligence

Vulnerability report

Active exploitation observed Confirmed confidence In CISA KEV

CVE-2021-41277

metabase

metabase / metabase · affected before 0.40.5

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Severity
CVSS 10.0 · Critical
Confidence
Confirmed
Exploit status
Observed in sensors
EPSS
97.2%
First observed
30 Jun 2026
Last observed
13 Aug 2026

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2021-41277 is an unauthenticated vulnerability affecting metabase metabase. Metabase is an open source data analytics platform. In affected versions a security issue has been discovered with the custom GeoJSON map...

Is it exploited?

Yes. KEV Intelligence sensors observed exploitation attempts with confirmed confidence.

Who is affected?

metabase / metabase affected before 0.40.5.

What should we do?

Patch immediately, validate internet-facing exposure, and monitor for matching requests.

Overview

Metabase is an open source data analytics platform

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.

Vendor Product Affected Status
metabase metabase Before 0.40.5 Affected
metabase metabase Before 1.40.5 Affected
metabase metabase Before 0.40.5 Affected
metabase metabase Before 1.40.5 Affected
metabase metabase Before 0.40.5 Affected
metabase metabase >= 1.0.0, < 1.40.5 Affected
Published
17 Nov 2021
Exploitation Reported
12 Nov 2024
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

cisa nuclei_scanner nessus_scanner

CVE References

  • CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2021-41277
  • GitHub — metabase/metabase github.com · CVE Record https://github.com/metabase/metabase/security/advisories/GHSA-w73v-6p...
  • GitHub — metabase/metabase github.com · CVE Record https://github.com/metabase/metabase/commit/042a36e49574c749f944e19cf...

Exploitation evidence

Why KEV Intelligence marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CISA

Recorded 12 Nov 2024

Independent exploitation attestation added to the KEV Intelligence record.

Active exploitation observed

KEV Intelligence sensor

First observed 30 Jun 2026

First-party sensor telemetry confirms matching exploitation attempts.

Proof of concept available

GitHub

Recorded 21 Nov 2021

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.

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Source Added
CISA First 2024-11-12 00:00 UTC
The Shadowserver 2026-06-02 00:00 UTC
KEV Intelligence 2026-07-29 10:26 UTC

Operational indicators for this CVE are listed under Detection.

Sensor telemetry

First-party evidence of exploitation activity

Aggregate observations show the scale, recency, and distribution of activity without overstating sparse data.

88

Attempts observed

9

Unique attacker IPs

4

Attacker countries

DE · NL · RU · US

28

Sensors observed

Exploitation attempts over the last 52 days

Daily events observed by KEV Intelligence sensors

Updated 19 Aug 2026

0
1
0
0
11
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
2
3
2
3
0
2
2
0
1
32
22
8
3
0
0
0
0
1
5
0
1
0
0
0
1
0
0
0
0
0
0
29 Jun 10 Jul 21 Jul 1 Aug 19 Aug

First observed 30 Jun 2026 · Last observed 13 Aug 2026

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Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
1
User-Agents
1

Raw values available in Pro and Enterprise.

Virtual patch status

No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

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Attacker IP Indicators

Attacker IP indicators observed · available in Pro and Enterprise.

Sensor-derived attacker IP indicators are available to Pro and Enterprise accounts under Detection and through the Pro API.

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Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-41277.yaml 25 Apr 2025
Nessus https://www.tenable.com/plugins/nessus/163589 08 Mar 2023

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

10.0 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L

EPSS

97.2%

Weaknesses

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

All CVSS Scores

CVSS v3.1 10.0 Critical

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

CVSS v2.0 5.0 Medium

AV:N/AC:L/Au:N/C:P/I:N/A:N

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

Metabase - Local File Inclusion

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation

  1. Observed by KEV Intelligence sensors

    Evidence-backed exploitation signal

  2. Indicators of compromise added (13)

    Indicators of compromise recorded

  3. Public PoC available

    Public proof-of-concept code published

  4. KEV confirmed by The Shadowserver

    Exploitation attested by an external source

  5. Nuclei template available

    Scanner coverage available

  6. Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  7. Nessus plugin available

    Scanner coverage available

  8. CVE published

    Vulnerability disclosed publicly

  9. CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2021-41277

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2021-41277",
  "confidence": "Confirmed",
  "cvss_score": 10.0,
  "cvss_estimated": false,
  "epss_score": 0.97178,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": true
  },
  "sensor_telemetry": { "attempts": 88, "sensors": 28 }
}

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