CVE-2024-51757Public exploitNetwork attack vector

Host code execution via script source URL

Published Nov 6, 2024 · Updated Nov 6, 2024

Code injection in capricorn86 Happy DOM before 15.10.2 allows remote attackers to execute code via a crafted script source URL. SyncFetchScriptBuilder embeds the requested URL in JavaScript passed to child_process.execFileSync without safe serialization, so quotes in a script src escape the URL literal. Exploitation requires an application to parse attacker-controlled markup with script execution enabled and runs commands with the hosting process's privileges.

CVSS severity9.3
Critical
EPSS probability0.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Code injection in capricorn86 Happy DOM before 15.10.2 allows remote attackers to execute code via a crafted script source URL. SyncFetchScriptBuilder embeds the requested URL in JavaScript passed to child_process.execFileSync without safe serialization, so quotes in a script src escape the URL literal. Exploitation requires an application to parse attacker-controlled markup with script execution enabled and runs commands with the hosting process's privileges.

The record

CVE
CVE-2024-51757
Published
Nov 6, 2024
Updated
Nov 6, 2024
Vendor
capricorn86
Product
Happy DOM
Classifications
CWE-94, CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 6, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <15.10.1
  2. Affected versionversion=< 15.10.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

capricorn86 · Happy DOMversion=0 <15.10.1; version=< 15.10.2

Published CVSS scores

9.3GitHub CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo