CVE-2021-43798 CISA KEV — actively exploited

Grafana Path Traversal Vulnerability

grafana — grafana

Grafana is an open-source platform for monitoring and observability. Grafana versions 8.0.0-beta1 through 8.3.0 (except for patched versions) iss vulnerable to directory traversal, allowing access to local files. The vulnerable URL path is: `<grafana_host_url>/public/plugins//`, where is the plugin ID for any installed plugin. At no time has Grafana Cloud been vulnerable. Users are advised to upgrade to patched versions 8.0.7, 8.1.8, 8.2.7, or 8.3.1. The GitHub Security Advisory contains more information about vulnerable URL paths, mitigation, and the disclosure timeline.

CVSS scoreHigh

7.5

EPSS — exploitation probabilityHigh

88.5%

Vector breakdown

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: None
Availability: None

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

Published: Dec 7, 2021
Modified: Jun 17, 2026
Added to KEV: Oct 9, 2025
Federal patch due: Oct 30, 2025

CISA required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Weakness classification

CWE-22Improper Limitation of a Pathname to a Restricted Directory

Affected packages

github.com/grafana/grafanago

GHSA-8pjx-jj86-j47p

Proof-of-concept & exploitation references

8 found

Weaponization

Nuclei template

Available

Metasploit module

Not found

Public repositories whose name or description references CVE-2021-43798, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.

References

How this class of flaw gets exploited

Path Traversal (Directory Traversal)

Frequently asked questions

What is CVE-2021-43798?

How severe is CVE-2021-43798?

CVE-2021-43798 has a CVSS base score of 7.5 out of 10 (CVSS 3.1).

Is CVE-2021-43798 actively exploited in the wild?

Yes. CVE-2021-43798 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Oct 9, 2025, meaning CISA has confirmed evidence of active exploitation.

What is the EPSS score for CVE-2021-43798?

88.5% - meaning FIRST.org's EPSS model estimates a 88.5% probability this vulnerability will be exploited in the wild within 30 days (100% percentile among all scored CVEs).

Is there exploit tooling available for CVE-2021-43798?

Yes - a public Nuclei template referencing CVE-2021-43798 exist in public repositories we checked. We also found 8 public GitHub repositories referencing this CVE.

What type of vulnerability is CVE-2021-43798?

CVE-2021-43798 is classified under CWE-22 (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')).

Cross-checked against

Impactr finds and proves whether CVE-2021-43798 - or flaws like it - are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.

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