CVE-2024-21537Public exploitNetwork attack vector

Code execution via eval-generated dynamic import

Published Oct 31, 2024 · Updated Aug 17, 2026

Code injection in antonk52 lilconfig 3.1.0 allows remote authenticated users to execute arbitrary JavaScript through a crafted loader input. The dynamicImport function embeds the loader-supplied module identifier in an eval-generated import expression without neutralizing JavaScript syntax. Reachability requires a consuming application to pass attacker-controlled text to defaultLoaders, after which injected code runs with the host Node.js process privileges.

CVSS severity9.3
Critical
EPSS probability1.12%
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 antonk52 lilconfig 3.1.0 allows remote authenticated users to execute arbitrary JavaScript through a crafted loader input. The dynamicImport function embeds the loader-supplied module identifier in an eval-generated import expression without neutralizing JavaScript syntax. Reachability requires a consuming application to pass attacker-controlled text to defaultLoaders, after which injected code runs with the host Node.js process privileges.

The record

CVE
CVE-2024-21537
Published
Oct 31, 2024
Updated
Aug 17, 2026
Vendor
antonk52
Product
lilconfig
Classifications
CWE-94, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 31, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 17, 2026Record 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=3.1.0 <3.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

antonk52 · lilconfigversion=3.1.0 <3.1.1

Published CVSS scores

8.8SnykCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.9SnykCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
9.3SnykCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.7GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA: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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

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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