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ExploitedIn CISA KEVFix available

CVE-2021-41277

Exploitation confirmed. First attested on 2023-10-15 by CISA-ADP, CISA KEV, GCVE · kevintel, GCVE · shadowserver.

  • Published2021-11-17
  • WeaknessCWE-200 · CWE-22

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2021-11-1720:15CVE publishedNVD
  2. 2023-10-1508:28Listed as exploited by GCVEGCVE
  3. 2023-10-1508:28Exploitation first reportedGCVE
  4. 2024-11-12Added to the CISA KEV catalogCISA KEV
  5. 2025-08-2003:56SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-41277?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-41277?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Metabase
BranchAffectedFixed in
0.40= 0.40.0no fix published
0.40= 0.40.1no fix published
0.40= 0.40.2no fix published
0.40= 0.40.3no fix published
0.40= 0.40.4no fix published
1.40= 1.40.0no fix published
1.40= 1.40.1no fix published
1.40= 1.40.2no fix published
1.40= 1.40.3no fix published
1.40= 1.40.4no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As GitHub_M, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • metabase
    Affected
    • = < 0.40.5no fix stated
    • = >= 1.0.0, < 1.40.5no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2021-11-17

Fix

  1. CISA’s required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.due 2024-12-03

Advisories and patches

Detection

read 2026-11-02 22:42 UTC
Nuclei template
available
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
12 repositories, unverifiedtahtaciburak/CVE-2021-41277Henry4E36/Metabase-cve-2021-41277kap1ush0n/CVE-2021-41277z3n70/CVE-2021-41277kaizensecurity/CVE-2021-41277
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2024-11-12
Patch Due Date
2024-12-03
Ransomware Use
Unknown
Required Action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2021-11-17
Last Modified
2026-10-08
NVD status
Analyzed

Frequently asked questions

What is CVE-2021-41277?

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.

Is CVE-2021-41277 actively exploited?

Yes. CVE-2021-41277 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2024-12-03.

What is the CVSS score for CVE-2021-41277?

CVE-2021-41277 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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