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Known exploited vulnerability

CVE-2021-43798

highCVSS 3.1 7.5In CISA KEVEPSS 89%Published · grafana

The short answer

CVE-2021-43798 affects grafana grafana and is rated high (CVSS 7.5). CISA added it to the Known Exploited Vulnerabilities catalog on 2025-10-09: attackers are using it, so patch it first. Fixed versions are published for github.com/grafana/grafana (8.3.1, 8.2.7, 8.1.8).

What it is

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.

Weakness: CWE-22.

Severity

7.5 high

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

Exploited (CISA KEV)

Yes, since Oct 9, 2025

Federal due date Oct 30, 2025

EPSS, next 30 days

89%

Higher than 100% of scored CVEs

How it can be exploited

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

What CISA says to do

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

Affected packages and fixed versions

PackageEcosystemFixed inAdvisory
github.com/grafana/grafanaGo8.3.1, 8.2.7, 8.1.8, 8.0.7GHSA-8pjx-jj86-j47p

Is it in your code? Drop your lockfile into the free vulnerability check, or let vulnerability watch check your repository every day and open the upgrade as a pull request.

Affected products

grafana. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2021-43798 being exploited?

Yes. CISA added CVE-2021-43798 to its Known Exploited Vulnerabilities catalog on 2025-10-09, with a federal remediation due date of 2025-10-30.

How do I fix CVE-2021-43798?

Upgrade to a fixed version: github.com/grafana/grafana (Go) 8.3.1 or 8.2.7 or 8.1.8 or 8.0.7. CISA's 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.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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