CVE-2021-4430

Build-host environment disclosure via bundle serialization

Published Nov 6, 2023 · Updated Jun 12, 2025

Information disclosure in ColdBox Elixir 3.1.6 allows attackers to read build-host environment variables from generated JavaScript bundles. The default configuration passes every process.env key and value to Webpack DefinePlugin, which serializes the complete build environment into client-delivered code. An attacker must obtain an affected generated bundle; disclosed values include any secrets present in the build process environment.

CVSS severity3.5
Low
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in ColdBox Elixir 3.1.6 allows attackers to read build-host environment variables from generated JavaScript bundles. The default configuration passes every process.env key and value to Webpack DefinePlugin, which serializes the complete build environment into client-delivered code. An attacker must obtain an affected generated bundle; disclosed values include any secrets present in the build process environment.

The record

CVE
CVE-2021-4430
Published
Nov 6, 2023
Updated
Jun 12, 2025
Vendor
Ortus Solutions
Product
ColdBox Elixir
Classifications
CWE-200, T1552.001
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Nov 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Jun 12, 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=3.1.6

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Ortus Solutions · ColdBox Elixirversion=3.1.6

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
3.5VulDB CNACVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
3.5VulDB CNACVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
2.7VulDB CNAAV:A/AC:L/Au:S/C:P/I:N/A:N

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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1552.001Unsecured Credentials: Credentials In Files

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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