How severe is CVE-2024-51757?

CVE-2024-51757 has a CVSS 4.0 base score of 9.3, rated critical severity.

Is CVE-2024-51757 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2024-51757?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-51757 have an EU (EUVD) identifier?

Yes. CVE-2024-51757 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-3226.

When was CVE-2024-51757 published?

CVE-2024-51757 was published on 2024-11-06 and last updated on 2026-06-17.

CVE-2024-51757

CVE-2024-51757 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Critical (CVSS 4.0 base score 9.3)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-3226
Weakness: CWE-79
Published: 2024-11-06
Last modified: 2026-06-17

Description

happy-dom is a JavaScript implementation of a web browser without its graphical user interface. Versions of happy-dom prior to 15.10.2 may execute code on the host via a script tag. This would execute code in the user context of happy-dom. Users are advised to upgrade to version 15.10.2. There are no known workarounds for this vulnerability.

Frequently asked questions

What is CVE-2024-51757?: happy-dom is a JavaScript implementation of a web browser without its graphical user interface. Versions of happy-dom prior to 15.10.2 may execute code on the host via a script tag. This would execute code in the user context of happy-dom. Users are advised to upgrade to version 15.10.2. There are no known workarounds for this vulnerability.
How severe is CVE-2024-51757?: CVE-2024-51757 has a CVSS 4.0 base score of 9.3, rated critical severity.
Is CVE-2024-51757 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2024-51757?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-51757 have an EU (EUVD) identifier?: Yes. CVE-2024-51757 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-3226.
When was CVE-2024-51757 published?: CVE-2024-51757 was published on 2024-11-06 and last updated on 2026-06-17.

References

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