CVE-2022-40274Public exploit

Arbitrary code execution via node-integrated Markdown preview

Published Sep 30, 2022 · Updated May 20, 2025

Code injection in GetGridea Gridea 0.9.3 allows context-dependent attackers to execute arbitrary code via a malicious Markdown file. The preview renderer executes embedded image error-handler JavaScript with Node integration, exposing require() and child_process to file content. Opening and previewing the file is required; successful exploitation runs attacker-chosen commands with the Gridea user's privileges.

CVSS severity7.8
High
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in GetGridea Gridea 0.9.3 allows context-dependent attackers to execute arbitrary code via a malicious Markdown file. The preview renderer executes embedded image error-handler JavaScript with Node integration, exposing require() and child_process to file content. Opening and previewing the file is required; successful exploitation runs attacker-chosen commands with the Gridea user's privileges.

The record

CVE
CVE-2022-40274
Published
Sep 30, 2022
Updated
May 20, 2025
Vendor
GetGridea
Product
Gridea
Classifications
CWE-94, T1059.007, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 30, 2022CVE publishedPublication date reported by the CVE source.
  2. May 20, 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=0.9.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

GetGridea · Grideaversion=0.9.3

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.6Fluid AttacksCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1059.007Command and Scripting Interpreter: JavaScript
T1204.002User Execution: Malicious File

Public exploit references

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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