CVE-2024-36120Public exploit

Code execution via expression simplifier eval

Published May 31, 2024 · Updated Aug 2, 2024

Code injection in ben-sb JavaScript Deobfuscator before 1.1.0 allows local users to execute JavaScript through a crafted expression. The expression simplifier serializes parsed literal operands into a source string and passes that string to eval, allowing quote-breaking input to inject code. Exploitation requires an affected process to simplify attacker-controlled JavaScript, and injected code runs with that process's privileges.

CVSS severity8.1
High
EPSS probability0.35%
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 ben-sb JavaScript Deobfuscator before 1.1.0 allows local users to execute JavaScript through a crafted expression. The expression simplifier serializes parsed literal operands into a source string and passes that string to eval, allowing quote-breaking input to inject code. Exploitation requires an affected process to simplify attacker-controlled JavaScript, and injected code runs with that process's privileges.

The record

CVE
CVE-2024-36120
Published
May 31, 2024
Updated
Aug 2, 2024
Vendor
ben-sb
Product
JavaScript Deobfuscator
Classifications
CWE-94, T1059.007
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 31, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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 <1.1.0
  2. Affected versionversion=< 1.1.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

ben-sb · JavaScript Deobfuscatorversion=0 <1.1.0; version=< 1.1.0

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.1GitHubCVSS:3.1/AV:L/AC:H/PR:N/UI:N/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.

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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')
T1059.007JavaScript

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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