CVE-2022-31176Network attack vector

Authenticated file disclosure via Chromium local-file rendering

Published Sep 2, 2022 · Updated Apr 23, 2025

Unauthorized file disclosure in Grafana Image Renderer 3.5.0 and earlier allows remote authenticated users to retrieve host files. With HTTP remote rendering enabled, embedded Chromium prints a requested local file into the returned PNG instead of restricting navigation to authorized render targets. Reachability requires certain network conditions or a Grafana administrator-controlled fake data source, and very large files can exhaust service resources.

CVSS severity7.6
High
EPSS probability1.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unauthorized file disclosure in Grafana Image Renderer 3.5.0 and earlier allows remote authenticated users to retrieve host files. With HTTP remote rendering enabled, embedded Chromium prints a requested local file into the returned PNG instead of restricting navigation to authorized render targets. Reachability requires certain network conditions or a Grafana administrator-controlled fake data source, and very large files can exhaust service resources.

The record

CVE
CVE-2022-31176
Published
Sep 2, 2022
Updated
Apr 23, 2025
Vendor
Grafana Labs
Product
Grafana Image Renderer
Classifications
CWE-200, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 2, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 3.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Grafana Labs · Grafana Image Rendererversion=< 3.6.0

Published CVSS scores

8.3Grafana GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
7.6Grafana LabsCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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